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Search found 6043 matches

by THE FRENCHTOWN FLYER
Fri Dec 06, 2019 9:34 am
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder bore finish
Replies: 28
Views: 524

Re: Cylinder bore finish

It is at this point that I am going to have to 'fess up to being The Devil's Advocate. The discussion originally centered around cylinder bore finish, before I side-tracked it on to a discussion about honing plates. It was my way of pointing out that the surface finish of the bore walls may not be a...
by THE FRENCHTOWN FLYER
Tue Dec 03, 2019 4:05 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine doesn't like a lot of timing.
Replies: 17
Views: 193

Re: Engine doesn't like a lot of timing.

I commented on this topic before. If you increase cylinder pressure the optimum timing needs will decrease. That is because the burn rate will increase. If you raised the static compression from stock optimum timing is lessened. If you increased the volumetric efficiency through better manifolding o...
by THE FRENCHTOWN FLYER
Tue Dec 03, 2019 3:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder bore finish
Replies: 28
Views: 524

Re: Cylinder bore finish

I don't see how you could get an even crosshatch all the way to the top of the bore.


[EDIT: I just had a thought. The main bearing webs prevent you from honing from the bottom up, no?]
by THE FRENCHTOWN FLYER
Tue Dec 03, 2019 11:52 am
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder bore finish
Replies: 28
Views: 524

Re: Cylinder bore finish

Enough to unseat the rings from the bores in the last inch of travel. Somebody had a post up recently showing a pic of this. I'm guessing a couple of thou. Don't remember from work. We used more refined measuring instruments than a dial bore gage to display the numbers.
by THE FRENCHTOWN FLYER
Tue Dec 03, 2019 9:52 am
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder bore finish
Replies: 28
Views: 524

Re: Cylinder bore finish

I have some 1-5/8 Blanchard ground steel plate. It’s 6” wides x 20” long. I could cut a pieces and bore a hole through it and drill 4 bolt holes. I could make it to cover 2 bores, maybe 3. Is it worth the effort? It would take a while with a 1 hp Bridgeport. I guess that depends on how much you val...
by THE FRENCHTOWN FLYER
Mon Dec 02, 2019 8:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder bore finish
Replies: 28
Views: 524

Re: Cylinder bore finish

You will see the greatest distortion near the deck surface, each of the areas around the bolt holes being dimpled outwards. Of course this is where you would want it least as it is where the greatest pressure build-up is. That is one reason modern engines use head bolts anchored to the bottom of the...
by THE FRENCHTOWN FLYER
Mon Dec 02, 2019 1:03 pm
Forum: small six
Topic: Piston Ring Positioning
Replies: 1
Views: 117

Re: Piston Ring Positioning

This is good info, and is a good practice to follow on a new build-up. However I have discovered that piston rings may rotate on the piston ring grooves during normal engine operation. Thus there is no guarantee that the rings will stay positioned as installed. While working as an engine development...
by THE FRENCHTOWN FLYER
Sun Dec 01, 2019 11:29 am
Forum: 240-300 "Big Block" Six Performance
Topic: Cylinder bore finish
Replies: 28
Views: 524

Re: Cylinder bore finish

Are you using a block torque plate to hone? If not, regardless of the grit used, you will be ending up with square bores.
by THE FRENCHTOWN FLYER
Sat Nov 30, 2019 9:14 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Assembly lube
Replies: 4
Views: 147

Re: Assembly lube

A good grade of motor oil will generally work just fine. After all, that's what the engine sees its entire life. I do use some thicker white lube on the bearings just to prevent any initial start-up issues. Likewise with cam and valvetrain components I use a moly based cam lube.
by THE FRENCHTOWN FLYER
Sat Nov 30, 2019 9:34 am
Forum: Wanted
Topic: WTB exhaust manifold heat riser spring
Replies: 1
Views: 96

Re: WTB exhaust manifold heat riser spring

If you can't find that part separately maybe you could hook up a boden cable to the dash and open it manually?
by THE FRENCHTOWN FLYER
Fri Nov 29, 2019 10:33 am
Forum: 240-300 "Big Block" Six Performance
Topic: Piston shopping
Replies: 10
Views: 371

Re: Piston shopping

Blairsville Ed wrote:Is there a great need to replace the stock rod bolts, head bolts?

For a 9:1 CR and 5500 red line - no
by THE FRENCHTOWN FLYER
Fri Nov 29, 2019 9:12 am
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston and connecting rod combination
Replies: 20
Views: 682

Re: Another piston and connecting rod combination

sdiesel, I like how you think - outside the box. 2.100 is not much smaller than the existing journal size which is about 2.223??? (forgot exactly, somebody jump in here and correct me). So the journal "step" would barely be big enough to hit the edge of the rod bore and the bearing insert ...
by THE FRENCHTOWN FLYER
Fri Nov 29, 2019 8:49 am
Forum: 240-300 "Big Block" Six Performance
Topic: concerning reamers and how to use them. please help .
Replies: 8
Views: 267

Re: concerning reamers and how to use them. please help .

Point taken. And I thought my comment might elicit that reply. But I think it would fall into the "killing ants with a sledge hammer" solution. Maybe the #1 cylinder runs cooler. Maybe it wears more. Maybe it might make infinitesimally lesser amount of power or burn a teensy skosh more fue...
by THE FRENCHTOWN FLYER
Wed Nov 27, 2019 11:44 am
Forum: Forum Issues Only
Topic: Was there a problem
Replies: 8
Views: 832

Re: Was there a problem

bubba22349 wrote:FTF I also am experiencing the same slow opening as well as it timing out with a 502 bad gateway message. :bang:


Yup. I get that message too sometimes. I t sounds like that is the price of success - i.e. site popularity - on a smallish site budget.
by THE FRENCHTOWN FLYER
Wed Nov 27, 2019 11:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: Piston shopping
Replies: 10
Views: 371

Re: Piston shopping

Concerning the Silv-o-lite hypereutectic flat top pistons..... will they expand more or less than the cast dished pistons? I’m currently .007 beyond zero deck and there has been no interference problems. Well that's a good question. The original pistons had steel strut inserts cast inside them to c...
by THE FRENCHTOWN FLYER
Wed Nov 27, 2019 11:17 am
Forum: 240-300 "Big Block" Six Performance
Topic: Gas mileage reporting [4.9L w/ manual O.D. and 3.08 rear gears]
Replies: 10
Views: 994

Re: Gas mileage reporting [4.9L w/ manual O.D. and 3.08 rear gears]

Do you happen to know what the intake vacuum and A/F ratio was at 50 and 70?
Perhaps at 50 the intake vacuum was low enough to open the power valve but it was high enough to induce additional pumping losses (at 50 vs 70)?
Any chance the electrical and/or A/C loads varied significantly?
by THE FRENCHTOWN FLYER
Wed Nov 27, 2019 11:10 am
Forum: 240-300 "Big Block" Six Performance
Topic: concerning reamers and how to use them. please help .
Replies: 8
Views: 267

Re: concerning reamers and how to use them. please help .

Blairsville Ed wrote:What exactly can be done to correct the number 1 cylinder getting the blast from the radiator? A deflector?

Perhaps? I wouldn't know without testing. Maybe an externally mounted water pump?
by THE FRENCHTOWN FLYER
Tue Nov 26, 2019 5:06 pm
Forum: Forum Issues Only
Topic: Was there a problem
Replies: 8
Views: 832

Re: Excssive time to open fordsix - is it me or U?

Recently - within the last week or two - it has taken a long time to download this site at my computer when I try to open it. I have not noticed this delay on other sites I visit. Is this slow-down a problem for me or is it on your end?
by THE FRENCHTOWN FLYER
Tue Nov 26, 2019 11:32 am
Forum: 240-300 "Big Block" Six Performance
Topic: Throttle Cable Best Route
Replies: 2
Views: 170

Re: Throttle Cable Best Route

Lots of different carb orientation issues regarding cable routing can be resolved by just using the stock throttle cable routed to a uniquely fabbed bell crank mechanism mounted to either the valve cover or the intake manifold carb mounting pad. I recommend the use of small Heim ball ends and Thomso...
by THE FRENCHTOWN FLYER
Tue Nov 26, 2019 9:30 am
Forum: 240-300 "Big Block" Six Performance
Topic: concerning reamers and how to use them. please help .
Replies: 8
Views: 267

Re: concerning reamers and how to use them. please help .

in my quest to build a cooling system that i feel may be better than what we currently have to live with, I have found fittings that just drop in the core plug. they come in 1.5" , the size i ordered, which i discovered is far too small, and 2" which will be too big. I will need to ream t...
by THE FRENCHTOWN FLYER
Tue Nov 26, 2019 9:11 am
Forum: 240-300 "Big Block" Six Performance
Topic: Manifold & EGR Question
Replies: 3
Views: 158

Re: Manifold & EGR Question

^^ X2 ^^ I think it is better to slice off the head pipes ahead of the converter and use a merge collector into whatever kind of exhaust you want to hook up downstream of that. The head pipes are made of thick-walled low grade stainless ( they'll get a rusty patina but won't rot) capable of survivin...
by THE FRENCHTOWN FLYER
Mon Nov 25, 2019 11:20 am
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston and connecting rod combination
Replies: 20
Views: 682

Re: Another piston and connecting rod combination

I once built a 240 ci NA six for drag racing. I may not be the brightest and most competent engine builder - especially at the time I built that one, which was many decades ago - but according to the computer (ahem, slide rule) I figured I was getting about 325 HP at the rear wheels. Here's what I d...
by THE FRENCHTOWN FLYER
Sat Nov 23, 2019 10:32 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Babbit bearings-tri metal or aluminum
Replies: 3
Views: 139

Re: Babbit bearings-tri metal or aluminum

Most manufacturers have switched to aluminum. Advantages: They can support higher unit loading than babbited material, allowing for narrower bearings and smaller engines. They are environmentally more friendly than copper-LEAD and as such cheaper to produce. Domestically produced Cu/PB bearings are ...
by THE FRENCHTOWN FLYER
Fri Nov 22, 2019 9:52 am
Forum: E-Bay Finds
Topic: One-half-4-9-ford-industrial-engine-prototype-2-45-liter-3-cylinder
Replies: 10
Views: 298

Re: One-half-4-9-ford-industrial-engine-prototype-2-45-liter-3-cylinder

Wouldn't an inline-8 derivative be cool? That would pretty much insure that it would not fit in any vehicle...
...'cept maybe a '53 Buick.
by THE FRENCHTOWN FLYER
Thu Nov 21, 2019 12:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Cleveland plant Positive valve spring rotators (exhaust)
Replies: 3
Views: 165

Re: Cleveland plant Positive valve spring rotators (exhaust)

Thanks for the pictures xtasy. To be clear, the production ones I have seen apart were not the ball bearing design as seen in the first and last pictures in your post. The ones I have taken apart, as pictured in your third and fourth post, have a singular toroidal spring and no balls. They are certa...
by THE FRENCHTOWN FLYER
Tue Nov 19, 2019 12:05 pm
Forum: E-Bay Finds
Topic: One-half-4-9-ford-industrial-engine-prototype-2-45-liter-3-cylinder
Replies: 10
Views: 298

Re: One-half-4-9-ford-industrial-engine-prototype-2-45-liter-3-cylinder

Thanks David. But that info raises more questions than it answered. Where's it been since '07? The one on ebay looks like it is a welded up prototype. If it is indeed a runable engine then that is a great price for a potentially runable engine. I'd like to get details, e.g. CR, cam specs, etc. I cou...
by THE FRENCHTOWN FLYER
Tue Nov 19, 2019 11:44 am
Forum: 240-300 "Big Block" Six Performance
Topic: ok, a flyer on a totally new idea; belt driven cam.
Replies: 4
Views: 224

Re: ok, a flyer on a totally new idea; belt driven cam.

Been done. Contact Jessel. I do not think it is worth the time and effort unless you plan to rev to the Stratosphere. The teams using one are turning in excess of 9000 RPM on XFLO drag motors. Not sure if they moved the C-C distance of the crank/cam or not. They are using a unique CNC'd 3-piece timi...
by THE FRENCHTOWN FLYER
Mon Nov 18, 2019 8:18 pm
Forum: E-Bay Finds
Topic: One-half-4-9-ford-industrial-engine-prototype-2-45-liter-3-cylinder
Replies: 10
Views: 298

One-half-4-9-ford-industrial-engine-prototype-2-45-liter-3-cylinder

https://www.ebay.com/itm/one-half-4-9-ford-industrial-engine-prototype-2-45-liter-3-cylinder/143334334589?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649 I'm trying to find out if this is a runable prototype or just a conference room display talking piece. Cute little bugger. Reminds ...
by THE FRENCHTOWN FLYER
Thu Nov 14, 2019 5:09 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 2 barrel Venturi size
Replies: 13
Views: 467

Re: 2 barrel Venturi size

1986F150six wrote:
Sir, you "took some college", didn't you! :lol:

Case Institute of Technology, now part of Case Western Reserve University, Cleveland OH
by THE FRENCHTOWN FLYER
Wed Nov 13, 2019 10:35 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 2 barrel Venturi size
Replies: 13
Views: 467

Re: 2 barrel Venturi size

In real, life the carb airflow flow can vary between 'nothin', engine off, to some number even higher than the published rated flow number, such as when used on a big cubic inch engine at very high speed. Do not try to equate carb flow to a specific engine's volumetric efficiency. The volumetric eff...
by THE FRENCHTOWN FLYER
Wed Nov 13, 2019 4:32 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 2 barrel Venturi size
Replies: 13
Views: 467

Re: 2 barrel Venturi size

FTF, When you say the 1.08 is rated at 287 cfm & that is 205 cfm in 4bbl terms is the 2100/2150 1.08 flowing 287cfm as a 2bbl? I am a bit confused. Two and one venturii carbs are rated on a flow bench that is at a vacuum of 3.00 in. hg. Four barrel carbs are rated on a flow bench that is at a v...
by THE FRENCHTOWN FLYER
Wed Nov 13, 2019 10:23 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 92
Views: 5578

Re: 300 Rebuild

Don't know anything about this guy, or what he sells. Seems like a good deal though. Maybe too good. Interested in opinions. I know Tom Lowe. He is a smart, stand-up guy with several innovative products. Too bad he is mostly a Chevy fan - he'd be a good asset in the blue oval camp. It won't hurt a ...
by THE FRENCHTOWN FLYER
Tue Nov 12, 2019 9:51 am
Forum: 240-300 "Big Block" Six Performance
Topic: 4.9 interchangeability questions
Replies: 13
Views: 568

Re: 4.9 interchangeability questions

Darklakedan wrote:...The 92 was automatic,will a pilot bushing fit this crank for my 4 speed?

You will need to install a pilot bushing for a manual transmission in the end of the crankshaft. I think the later ones were all needle bearings - earlier ones were bronze oilite bushings.
by THE FRENCHTOWN FLYER
Tue Nov 12, 2019 9:49 am
Forum: 240-300 "Big Block" Six Performance
Topic: 2 barrel Venturi size
Replies: 13
Views: 467

Re: 2 barrel Venturi size

I do not know if 2-stage PVs are better. I'm guessing they further smooth out the transition between cruise A/F and WOT A/F.

The venturii boosters are unique in that they have emulsion well tubes and pullover jet tubes tailored specific to an application.
by THE FRENCHTOWN FLYER
Mon Nov 11, 2019 5:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 2 barrel Venturi size
Replies: 13
Views: 467

Re: 2 barrel Venturi size

The 2150 has further refinements. Either will work well. The biggest difference is the addition of part throttle metering rods that tailor the part throttle fuel curve more finely. Other gizmos and gadgets were added as time passed; some for cold operation, some for hot operation, some for altitude ...
by THE FRENCHTOWN FLYER
Mon Nov 11, 2019 2:02 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 2 barrel Venturi size
Replies: 13
Views: 467

Re: 2 barrel Venturi size

A 1.08 flows 287 cfm @ 3"hg. In four-barrel-speak that is equivalent to 205 cfm @ 1.5"hg. I'll let the user determine if that is right for their level of build and volumetric efficiency. One big advantage of the 1.08 is that there were a gazillion used on various Ford engines, making them ...
by THE FRENCHTOWN FLYER
Sun Nov 10, 2019 10:48 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 92
Views: 5578

Re: 300 Rebuild

Now that I have started working on the cylinder head. I would like some further explanation on this point. Is this because there is not sufficient material to allow it, or because there is no gain expected? Unless you are after performance gains in the high RPM range of this engine - 5000 to 7000 -...
by THE FRENCHTOWN FLYER
Thu Nov 07, 2019 6:05 pm
Forum: 240-300 "Big Block" Six Performance
Topic: looking fot FTF's three piece manifold
Replies: 5
Views: 310

Re: looking fot FTF's three piece manifold

Hi all. I have yet to try it. I am building a car around this intake - a '49 Anglia with a 240. I know it will be an improvement in power and extend the RPM range of that 240, especially with a cam and head and exhaust work. Fuel economy - not so much. It will have direct linkage to all three carbs....
by THE FRENCHTOWN FLYER
Wed Nov 06, 2019 10:03 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 92
Views: 5578

Re: 300 Rebuild

Good. I figured as much. It looks like the rest of your work is very sharp and thoughtful. And if you are using a knock sensor those fine tooth gears are the ones to use as there will be less "noise" in the knock signature, making true knock detection easier. [EDIT: I see its an '81 so no ...
by THE FRENCHTOWN FLYER
Wed Nov 06, 2019 9:59 am
Forum: 240-300 "Big Block" Six Performance
Topic: Turboing a stock 300, how to make it last?
Replies: 103
Views: 7789

Re: Turboing a stock 300, how to make it last?

...I am wondering if I can chop off the flange on the log manifold and have the turbo flange welded in its place, then begs the question where the wastegate would go if the turbo is bolted directly to the manifold. I'm stuck on which route to take, looking for some of your opinions. I would worry a...
by THE FRENCHTOWN FLYER
Wed Nov 06, 2019 9:45 am
Forum: 240-300 "Big Block" Six Performance
Topic: Crate engine or rebuild?
Replies: 8
Views: 496

Re: Crate engine or rebuild?

.. from the appearance of my work space, one would wonder how any good thing could come out of there on any other day than build day. That is interesting, because over the years I have noticed that there is not very much correlation between the cleanliness of ones work environment and the quality o...
by THE FRENCHTOWN FLYER
Wed Nov 06, 2019 9:32 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 92
Views: 5578

Re: 300 Rebuild

In looking at your pictures I noticed one additional thing. It looks as if the bolts that hold the cam retainer / thrust plate in place are not the correct bolts. The ones you have look to be normal hex heads. The plate is supposed to be fastened with a special thin hex head bolt. They have six groo...
by THE FRENCHTOWN FLYER
Wed Nov 06, 2019 9:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 92
Views: 5578

Re: 300 Rebuild

Rod and main clearances are typically in the .001 - .003" range . I hope your post was just a typo as the engine will not last with journal clearances in the range you stated. Did you type the numbers incorrectly?
by THE FRENCHTOWN FLYER
Fri Oct 25, 2019 9:08 pm
Forum: 240-300 "Big Block" Six Performance
Topic: What carb spacer do I need?
Replies: 4
Views: 482

Re: What carb spacer do I need?

Correct. You will need a four-hole spacer to make the DP work as intended. The primary barrels should be inboard - near the valve cover, putting the primary flow in the smaller, warmer, lower side of the runner.
by THE FRENCHTOWN FLYER
Thu Oct 24, 2019 9:13 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Loss of compression in all cylinders
Replies: 43
Views: 2004

Re: Loss of compression in all cylinders

That's not surface discoloration. That piston is ATE UP and compromised, and if I had to guess I'd say it was from incipient detonation.

I'm curious about your re-curved distributor. How did the curve differ from a production curve?
by THE FRENCHTOWN FLYER
Thu Oct 24, 2019 8:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Aussie speed intake manifold and valve cover.
Replies: 13
Views: 1258

Re: Aussie speed intake manifold and valve cover.

clintonvillian wrote:The Injector bosses on the Aussie Intake are inline with the port. The Stock fuel rail "cups" are on an angle, I don't think it would work.


Ideally the injector spray pattern needs to impinge on the back side of the intake valve. Anything else is less-than-optimum.
by THE FRENCHTOWN FLYER
Thu Oct 24, 2019 8:27 pm
Forum: Wanted
Topic: front spindles
Replies: 3
Views: 1637

Re: front spindles

I looked...
...but could not find the Econoline spindle assemblies. I do have a complete I-beam front axle in storage - make and year unknown - with spindles that I could part with if that will help.
by THE FRENCHTOWN FLYER
Wed Oct 23, 2019 11:13 am
Forum: E-Bay Finds
Topic: Tax is now being collected by using Paypal
Replies: 4
Views: 876

Re: Tax is now being collected by using Paypal

Yup wsa, I get that. Those who do business with me henceforth will now be required to absorb the additional costs associated with me making taxable online purchases, slight as it may be.
Or go elsewhere
by THE FRENCHTOWN FLYER
Wed Oct 23, 2019 10:58 am
Forum: 240-300 "Big Block" Six Performance
Topic: Loss of compression in all cylinders
Replies: 43
Views: 2004

Re: Loss of compression in all cylinders

Harte3 wrote:" I know the gunk you're talking about and have never seen it on this engine."

Cold starts and short trips are a big culprit.

Uh...yeah, In my case it was a quarter mile at a time...

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