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Search found 5762 matches

by THE FRENCHTOWN FLYER
Thu Apr 18, 2019 12:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

I hammer form the tubes into the rectangular ports of the flanges.This means stretching out the corners to fit tightly. A 1 5/8 pipe is sufficient for the street, and it clears the intake ports easier. Tack weld the tubes on the outside, then fully weld them up on the inside against the head. Dress ...
by THE FRENCHTOWN FLYER
Mon Apr 15, 2019 4:21 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 4.9 300 build
Replies: 3
Views: 156

Re: 4.9 300 build

You can reduce exhaust backpressure with a low restriction exhaust system that will have no deleterious effect on the engine.
by THE FRENCHTOWN FLYER
Mon Apr 15, 2019 10:28 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 226
Views: 12134

Re: 300 torque build 85 Bronco

Re; Yellow warning light:

Could you hook up a relay tied to the key that energizes the ignition circuit, eliminating the need for the separate switch / light?
by THE FRENCHTOWN FLYER
Sat Apr 13, 2019 9:43 am
Forum: 240-300 "Big Block" Six Performance
Topic: EDIS-6, how does/did you attach your 36-1
Replies: 6
Views: 167

Re: EDIS-6, how does/did you attach your 36-1

BigBlue94 wrote:My first thought were the threaded holes in the balancer. Are those the puller holes you speak of?


That is what I have done on a drag car for ancillary drive on my SFI harmonic balancer.
by THE FRENCHTOWN FLYER
Fri Apr 12, 2019 11:11 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 226
Views: 12134

Re: 300 torque build 85 Bronco

Also true. Compounds in today's fuel and combustion by-product compounds in your crankcase can also cause swelling over time, making "re-usable" gaskets "not-so-reusable".
by THE FRENCHTOWN FLYER
Fri Apr 12, 2019 10:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 226
Views: 12134

Re: 300 torque build 85 Bronco

If the rubber (or silicone) gaskets are exposed to mineral spirits in a de-greasing tank they will swell up. You could put them in a warm environment - like a car in the sun - for several weeks and they will probably shrink back down as the solvent evaporates.

...Or just buy new.
by THE FRENCHTOWN FLYER
Fri Apr 12, 2019 10:33 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 22
Views: 683

Re: Picked up my block and pistons from machine shop.

I'd be comfortable using either the 3/8 or 7/16. There are probably more options available using the 3/8. Likewise I would be comfortable using a 1.7:1 ratio, assuming all the valve/spring clearances are OK. For a cam with .45" lift you'll only see about a .030" lift increase with the 1.7 ...
by THE FRENCHTOWN FLYER
Thu Apr 11, 2019 8:37 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Hedman vs EFI headers
Replies: 23
Views: 715

Re: Hedman vs EFI headers

I like your '48 Chev project, especially how you narrowed the front end. I'm working on a '60 Suburban EMT fire truck and we're using the same unit, un-narrowed.
by THE FRENCHTOWN FLYER
Thu Apr 11, 2019 8:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 154
Views: 4577

Re: compression

Amazing! Do you think it had to do with piston or ring desgn? Maybe the larger the bore the more tolerant the ring gap can be? I have seen cylinder damage due to too tight of a ring end gap on many occasions. The tips make a point and a deep clear line is scorn. All cases have been notched ring end...
by THE FRENCHTOWN FLYER
Thu Apr 11, 2019 11:53 am
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 154
Views: 4577

Re: compression

Now I wonder what the end gap is on a zero-gap ring?
by THE FRENCHTOWN FLYER
Wed Apr 10, 2019 9:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Hedman vs EFI headers
Replies: 23
Views: 715

Re: Hedman vs EFI headers

Will the downstream exhaust clear the starter?
by THE FRENCHTOWN FLYER
Wed Apr 10, 2019 9:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 154
Views: 4577

Re: compression

I see. One of my job assignments was working with a Ford ring supplier to determine minimum end gaps. The supplier supplied the rings. Our lab built a bluprinted engine with a starting point gap - .014" as I remember. Now the test for ring gaps was brutal. The engine was put into an environment...
by THE FRENCHTOWN FLYER
Wed Apr 10, 2019 3:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 I6 EFI performance upgrades
Replies: 264
Views: 39124

Re: 300 I6 EFI performance upgrades

It sounds like sometime in the past your head has had hardened seats installed on the intake side, which is not factory. I'm guessing he can grind out the existing seat to fit the 1.84s but can go no larger without compromising the existing seats. I would just go with the 1.84s.
by THE FRENCHTOWN FLYER
Wed Apr 10, 2019 12:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 154
Views: 4577

Re: compression

I'm a little surprised you had to take anything off the rings to set the end gaps. Were you using file-fit rings or OEM replacements? I didn't think file-fit rings would be available for that ring design / size.
by THE FRENCHTOWN FLYER
Sun Apr 07, 2019 11:52 am
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 44
Views: 1051

Re: Has anyone ever built something like this?

A much better choice than the Mercruiser block is the Mopar aluminum midget blocks. Peto and Mudge built a Comp Eliminator inliner from 3-and-a-half cylinders out of one and two-and-a-half cylinders out of t'other. With very little on-track drag strip time they got it in the sevens before John passe...
by THE FRENCHTOWN FLYER
Sat Apr 06, 2019 9:58 am
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 44
Views: 1051

Re: Has anyone ever built something like this?

The Honda square piston had a square top just thick enough to hold the piston seals (No skirts) attached solidly to a connecting rod that swung on a standard crank. The thrust sides of the cylinder curved inward like an Hour Glass while the other two side were straight. They managed to get their 20...
by THE FRENCHTOWN FLYER
Sat Apr 06, 2019 9:40 am
Forum: 240-300 "Big Block" Six Performance
Topic: Yet another cam question
Replies: 10
Views: 227

Re: Yet another cam question

...Are there straight cut timing gears available? ... NO Pity. I have a couple of sets of straight cut prototype gears that a member made several years ago. They have an adjustable hub and are infinitely adjustable. It took me a lot of head scratching to figure how to use them but once I did I came...
by THE FRENCHTOWN FLYER
Sat Apr 06, 2019 9:01 am
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 44
Views: 1051

Re: Has anyone ever built something like this?

That's one knock I have about Hondas.
While HD has had a V-twin design since dirt was new Honda goes off in all directions - singles, V-twins, I-twins, I-4s, V-twin shaft drive, I-6, Flat-6, flat-fours, etc.

I love Honda products, but gee whiz, "Land the plane Martha!"
by THE FRENCHTOWN FLYER
Fri Apr 05, 2019 9:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 44
Views: 1051

Re: Has anyone ever built something like this?

I remember that Honda 8-valver.
by THE FRENCHTOWN FLYER
Fri Apr 05, 2019 8:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Yet another cam question
Replies: 10
Views: 227

Re: Yet another cam question

I agree and have been following that theory for years, head flow notwithstanding.
by THE FRENCHTOWN FLYER
Fri Apr 05, 2019 8:45 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 44
Views: 1051

Re: Has anyone ever built something like this?

This whole thread reminds me of a study one old-timer told me about, before I was working at Ford R&E. And thus begins the tale of the SQUARE PISTON small block Ford V8: Some execs at Ford in the early days of the development of the 221/260/289/302/351/255 Small Block Ford V8 decided it might be...
by THE FRENCHTOWN FLYER
Thu Apr 04, 2019 4:50 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 44
Views: 1051

Re: Has anyone ever built something like this?

posted earlier by swiss cheesing the block offsetting the bores and using some diesel wet sleeves machined and siamesed it might be possible to go up to a 4.7" bore. and leaving .200 walls offset boring across the block could make the thrust side thicker than the coast side leaving about .250 ...
by THE FRENCHTOWN FLYER
Wed Apr 03, 2019 4:17 pm
Forum: 240-300 "Big Block" Six Performance
Topic: compression
Replies: 154
Views: 4577

Re: compression

2.3 grams will be OK. Its less than three standard paper clips or three raisins. The carbon build-up on the pistons will probably vary more than that.
by THE FRENCHTOWN FLYER
Wed Apr 03, 2019 9:28 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up my block and pistons from machine shop.
Replies: 22
Views: 683

Re: Picked up my block and pistons from machine shop.

Make a swinging balance rod with precision micro ball bearings to support the end opposite the scale end. Make a tri-pod fixture to center up the scale end of the rod on the scale. That will aid in making all the big ends equal and all the small ends equal. I don't know why the totals should fluctua...
by THE FRENCHTOWN FLYER
Wed Apr 03, 2019 9:23 am
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

From a thermodynamic standpoint it would help turbo efficiency (PV=nRT). To what degree I don't know. But from a pragmatic standpoint I would worry about the long-term effect of heat and water/salt on the tubes. I would not wrap for that reason. Of course, if you make everything stainless it might b...
by THE FRENCHTOWN FLYER
Tue Apr 02, 2019 2:38 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

sandboxer wrote:Also..!
I goofed on the Clifford intake...The manifold checks out just fine after a caliper review.

You win!!!
by THE FRENCHTOWN FLYER
Tue Apr 02, 2019 11:38 am
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

I believe I can do a decent job. I have plans for a flow bench but haven’t built it yet, so measuring my work isn’t possible at this point. I’d like to build the bench before I tackle the porting and I’m wanting to flow my manifolds as well. So I’m a ways off still. Do you have the plans to build a...
by THE FRENCHTOWN FLYER
Mon Apr 01, 2019 6:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Replacing Cam and Lifters
Replies: 30
Views: 809

Re: Replacing Cam and Lifters

ethanperry wrote:An engine build and partial restoration sounds like a good father/son job when Levi gets a little older. Thanks again for the great advice.

very good idea on many levels
by THE FRENCHTOWN FLYER
Mon Apr 01, 2019 4:13 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

Thanks FTF What rpm are you seeing at the strip? On the ones with stock rods we'll run it up to 5500. On a couple of times my son over revved his 240 and free revved the motor to 7000. I'm building him a replacement 303 and dropping his 240 in my Attic Anglia build. https://www.jalopyjournal.com/fo...
by THE FRENCHTOWN FLYER
Mon Apr 01, 2019 4:04 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 44
Views: 1051

Re: Has anyone ever built something like this?

I don't have access to my collection now, but I seem to remember that the cylinder wall thickness was .140 - .170", assuming there is no core shift. A .060" over engine leaves .110 - .140" if everything is perfect, and that is about the limit of my comfort zone. There are "a few&...
by THE FRENCHTOWN FLYER
Mon Apr 01, 2019 1:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

sandboxer, I like your valve grinder. It is the same one I use. (Come to think of it so is the rotary phone) It is a wonderful machine in the hands of a skilled operator. I use mine for more than finishing valves. I have used spit hole rods in both 240 and 300 drag cars. The 300 in my Willys has lot...
by THE FRENCHTOWN FLYER
Sun Mar 31, 2019 2:32 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 226
Views: 12134

Re: 300 torque build 85 Bronco

... But I tightened down the seats half a turn. Half a turn is pretty radical - maybe, dunno, a half inch of fuel level. Not familiar with QF design details - does it have fuel level plugs or porthole windows? When you get it idling better fine tune the level as per mfgr's recommendations. Sometime...
by THE FRENCHTOWN FLYER
Sun Mar 31, 2019 11:09 am
Forum: 240-300 "Big Block" Six Performance
Topic: Replacing Cam and Lifters
Replies: 30
Views: 809

Re: Replacing Cam and Lifters

The oil pump is essentially a mini-dynamometer. A bigger pump pumps more oil... at the expense of taking more power to run. That oil either goes to the bearings, etc. or through the pump by-pass circuit if the engine demand does not require more oil to maintain sufficient pressure. For performance a...
by THE FRENCHTOWN FLYER
Sat Mar 30, 2019 10:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

Let's step back and take a deep breath. One thing that makes the 300 so special to me is its simplicity of design. I sometimes describe it as six Briggs and Stratton motors in a row, because it is such a basic engine design. So why would you want to overthink it with Overhead Cam Head, roller cams a...
by THE FRENCHTOWN FLYER
Sat Mar 30, 2019 3:40 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

I see a couple of issues with the aftermarket hydraulic roller lifters for 460s. First is the height. They look taller than conventional roller lifters. Will they fit past the side cover attachment bosses? Second is cost. At $500 plus another $1000 for a custom roller hydraulic cam and pushrods and ...
by THE FRENCHTOWN FLYER
Sat Mar 30, 2019 11:42 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 226
Views: 12134

Re: 300 torque build 85 Bronco

I like to turn the crank over a few half rotations during priming to insure all the lifters get filled and and bearing surfaces are wiped with oil.
by THE FRENCHTOWN FLYER
Sat Mar 30, 2019 11:38 am
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

I think the larger issue is getting a viable retention device to position the hydraulic lifters.
by THE FRENCHTOWN FLYER
Fri Mar 29, 2019 11:54 am
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

Am I missing something here? I have yet to see a hydraulic roller cam in a 300. Has somebody done this? Link?
by THE FRENCHTOWN FLYER
Thu Mar 28, 2019 10:56 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

You and I had talked about a hydraulic roller. I would like a cam that I can put in the 300 if need be. Whatever cam you put in the 240 will run about 1000 rpm less in a 300. Did we talk about having you find a single pair of 460 BBF roller lifters with the side bar to see what it takes to get them...
by THE FRENCHTOWN FLYER
Thu Mar 28, 2019 9:48 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

If that is for pulling I'd use a turbo. Short of that find a couple of tiny 2150 / 2100 carbs for te 2 x 4 intake and try them.
by THE FRENCHTOWN FLYER
Wed Mar 27, 2019 9:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

I think that engine was in the Volksrod roadster built by Posey's.
by THE FRENCHTOWN FLYER
Wed Mar 27, 2019 4:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 107
Views: 1640

Re: Fresh Rebuilt 240

What are you going to use it for / in?
by THE FRENCHTOWN FLYER
Wed Mar 27, 2019 4:40 pm
Forum: 240-300 "Big Block" Six Performance
Topic: overhead cam.
Replies: 29
Views: 802

Re: overhead cam.

Image

Image
by THE FRENCHTOWN FLYER
Tue Mar 26, 2019 9:20 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Stuck valve locks
Replies: 53
Views: 843

Re: Stuck valve locks

I did encounter some head gasket that had one dowel hole slightly offset, so the fire rings were not concentric with the block bores. Since I was using O-rings this was problematic. I use FelPro almost exclusively on my performance builds, so it was either the 8168 PT or the 1024 - can't remember. A...
by THE FRENCHTOWN FLYER
Mon Mar 25, 2019 6:04 pm
Forum: 240-300 "Big Block" Six Performance
Topic: overhead cam.
Replies: 29
Views: 802

Re: overhead cam.

I learned something today.

Thanks Max.
by THE FRENCHTOWN FLYER
Mon Mar 25, 2019 12:40 pm
Forum: 240-300 "Big Block" Six Performance
Topic: overhead cam.
Replies: 29
Views: 802

Re: overhead cam.

That's interesting Max.

Not being well versed in the mechanics of a diesel engine I'm wondering how the charge volume and the timing of the injector pulses gets changed vs speed and load ? Or does it? Is the fuel pressure to the injector varied? I'm so confused...
by THE FRENCHTOWN FLYER
Mon Mar 25, 2019 11:50 am
Forum: 240-300 "Big Block" Six Performance
Topic: 240 mods update
Replies: 23
Views: 578

Re: 240 mods update

The column shift with the rug trans is possible. It has to be the cast iron trans with the side shifter levers. Reverse has its own lever so the column would shift 1-2 and 3-4. I would have to rig up a cable type system to engage reverse with the column shift in neutral. That would be a fun project...
by THE FRENCHTOWN FLYER
Mon Mar 25, 2019 11:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: Tractor Puller
Replies: 139
Views: 13136

Re: Tractor Puller

Because the engine has seven main bearings a 4-bolt cap is not the issue. There is not enough meat on the block to do 4-bolt anyway. It's stronger main caps that are needed. They could be made from billet steel, like 4340 and be virtually bulletproof. A deep skirted block, like the FE/FT engines or ...
by THE FRENCHTOWN FLYER
Mon Mar 25, 2019 9:35 am
Forum: 240-300 "Big Block" Six Performance
Topic: 240 mods update
Replies: 23
Views: 578

Re: 240 mods update

After watching a few youtube "boat ramp FAILS" I'd add a receiver and ball to your front bumper so a mate can tether your truck as you back into the ramp. It's also useful for moving the boat around the yard in tight places.Don't forget to add a tall vent tube to the transfer case or trans...

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