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Search found 417 matches

by Max_Effort
Sun May 05, 2019 9:03 am
Forum: 240-300 "Big Block" Six Performance
Topic: Possible bad head gasket?
Replies: 27
Views: 1507

Re: Possible bad head gasket?

Well, I got the gasket installed fairly easily. Unfortunately all of the Chevy rockers have not yet arrived, so I wasn't able to put those in yet. I did install the efi style exhaust and downpipe, which was sort of a hassle as it didn't line up well with the manifolds. We ended up getting as close ...
by Max_Effort
Sat May 04, 2019 11:16 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 torque build 85 Bronco
Replies: 313
Views: 22146

Re: 300 torque build 85 Bronco

My motor will run hot if I’m working it and not moving. The electric fan will kicks on at about 200 degrees. It’s only boiled over a few times though. I have heard that a high flow water pump can cause over heating issues in this situation. The theory is, it moves the water through the radiator too...
by Max_Effort
Sat May 04, 2019 8:52 am
Forum: 240-300 "Big Block" Six Performance
Topic: 600 hp on a 300
Replies: 42
Views: 6224

Re: 600 hp on a 300

Pat Nahan's car has to be making around 750 HP

https://m.youtube.com/watch?v=zzwmr3OAb3g
by Max_Effort
Fri May 03, 2019 9:51 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Piston wrist pin offset
Replies: 12
Views: 724

Re: Piston wrist pin offset

There are engine builders that have gained some power by installing all the pistons “backwards” , with the piston offset towards the minor thrust wall.
by Max_Effort
Thu May 02, 2019 5:47 pm
Forum: 240-300 "Big Block" Six Performance
Topic: EFI exhaust manifold cast STEEL or iron?
Replies: 10
Views: 821

Re: EFI exhaust manifold cast STEEL or iron?

Cut the ball part off and then mill it for a flat flange. Thought about doing that AND using a donut gasket with the stock ball socket pipes. Not sure if that'd be better? Might work, might leak and blow out I think either a good ball and good socket Or A flat milled manifold and a heavy, thick fla...
by Max_Effort
Wed May 01, 2019 7:36 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 lacking HP
Replies: 43
Views: 2512

Re: 300 lacking HP

I have to wonder if 1) The DP manifold is choking the engine Or 2) You're getting into detonation with the high compression and short cam. The horsepower curve will stop (level) when you get into detonation . Have you done some plug tests , readings? Looked at the plugs under magnification and see i...
by Max_Effort
Tue Apr 30, 2019 6:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: EFI exhaust manifold cast STEEL or iron?
Replies: 10
Views: 821

Re: EFI exhaust manifold cast STEEL or iron?

Cut the ball part off and then mill it for a flat flange.
by Max_Effort
Tue Apr 30, 2019 6:05 am
Forum: 240-300 "Big Block" Six Performance
Topic: Oil pump issue ?
Replies: 10
Views: 746

Re: Oil pump issue ?

Sounds as the bypass valve is stuck. I think you’re going to have to drop the pan and remove the pump. You can bench test the pump with a block off plate tapped for a gauge and the pump submersed in a can of oil. Not the answer I was hoping for, but such is life :) What if I took the distributor ou...
by Max_Effort
Mon Apr 29, 2019 11:06 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Oil pump issue ?
Replies: 10
Views: 746

Re: Oil pump issue ?

Sounds as the bypass valve is stuck. I think you’re going to have to drop the pan and remove the pump.

You can bench test the pump with a block off plate tapped for a gauge and the pump submersed in a can of oil.
by Max_Effort
Mon Apr 29, 2019 10:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: New sound at Idle
Replies: 17
Views: 1013

Re: New sound at Idle

Agree! I have the $5.00 Harbor freight deal. I have used my work scopes because the ear tips seal so well. Again on a screw driver lightly placed on area of interest. I have learned some interesting things. You have given me an idea. I’m going to connect a HB scope earset to my mechanics scope. I’v...
by Max_Effort
Mon Apr 29, 2019 11:50 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 lacking HP
Replies: 43
Views: 2512

Re: 300 lacking HP

Yes you adjust the intake valve just as the exhaust valve begins to open BUT you adjust the exhaust valve just as the intake valve CLOSES not opens. How far are you turning the adjuster nut once the pushrod has no lash? I did a 1/2 turn after the pushrod couldn't be turned. I will redo the process ...
by Max_Effort
Sun Apr 28, 2019 10:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Permanent 300 Six Cyl Head CFM solutions- A Work in Progress
Replies: 472
Views: 61099

Re: Permanent 300 Six Cyl Head CFM solutions- A Work in Progress

Obviously that has not happened and I am VERY disappointed to even have to report that reality to you. WHY?? would be the next logical question from any astute observer of this Forum! ANSWER:>>Some of the blame lies with me for being too accommodating and forgiving when dealing with others involved...
by Max_Effort
Sun Apr 28, 2019 3:46 pm
Forum: 144-250 "Small Block" Six Performance
Topic: 250 build advise
Replies: 40
Views: 1704

Re: 250 build advise

I appreciate all the help. Sad part is the early 300 rods are just as hard as the 2.5hsc rods..... I'm prolly going to try and find more specs on the aussie pistons and crunch the numbers on 2 or 3 set ups I don't wanna build a engine that I can't upgrade later to the aluminum head. Thought about j...
by Max_Effort
Sat Apr 27, 2019 8:36 am
Forum: 240-300 "Big Block" Six Performance
Topic: Positive Valve Stem Seal Size
Replies: 9
Views: 706

Re: Positive Valve Stem Seal Size

dsharhon wrote:Okay. The hole isn't centered on the boss anymore, though. Any reason I shouldn't just use umbrella seals, at this point?


The Bronze guide liners shouldn’t have changed that. Are you looking at the chamfer or did you measure?

Umbrella seals will be ok.
by Max_Effort
Sat Apr 27, 2019 12:15 am
Forum: 144-250 "Small Block" Six Performance
Topic: My Budget 250 build
Replies: 187
Views: 21087

Re: My Budget 250 build

Oops, I saw arp and thought studs Well I went ahead and ordered the studs, not sure if Speedmaster stuff is any good but ARP doesn't offer a set for the 250, hopefully studs will be an upgrade over stock bolts irregardless. Also, if nothing happens the block is finally going next week to be bored, ...
by Max_Effort
Fri Apr 26, 2019 11:31 pm
Forum: Gasoline Alley
Topic: Saw this photo at the Petersen Museum- interesting!
Replies: 12
Views: 1034

Re: Saw this photo at the Petersen Museum- interesting!

34596EFF-D3A9-48C1-A617-2707F670F41F.jpeg
by Max_Effort
Fri Apr 26, 2019 11:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: New sound at Idle
Replies: 17
Views: 1013

Re: New sound at Idle

I’m using a HB stethoscope. All I hear all over is whirring. The block is not hammering at all. As a veterinarian, I use one all the time. It solves so many problems. I consider myself good at this. I listen when all is good. Well I have an idiot light. I’ll find a way to get a reading on a gauge. ...
by Max_Effort
Fri Apr 26, 2019 10:52 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Positive Valve Stem Seal Size
Replies: 9
Views: 706

Re: Positive Valve Stem Seal Size

Your machinist should be easily able to get them, if not, they’re availible online.
by Max_Effort
Fri Apr 26, 2019 10:46 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Positive Valve Stem Seal Size
Replies: 9
Views: 706

Re: Positive Valve Stem Seal Size

The guides are machined for that style positive seal. Just use the same type of seal, no additional machining required. The seals below will work. nominal size 11/32 x .562. (Will work if guide measures a bit smaller, they start small and stretch over the guide) SBI 122-1316, Qualcast 38-935-45 Most...
by Max_Effort
Thu Apr 25, 2019 9:40 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Positive Valve Stem Seal Size
Replies: 9
Views: 706

Re: Positive Valve Stem Seal Size

The OP thinks there were positive seals on the head before the guide work. It’s possible the head was done once before. We also don’t know what method was used to replace the guides this time. That’s why I asked for a photo of the guides.
by Max_Effort
Thu Apr 25, 2019 9:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Possible bad head gasket?
Replies: 27
Views: 1507

Re: Possible bad head gasket?

Then again, if you leave the manifolds on you will not be able to check for valve leakage by using solvent. A head alone weighs about 80 lbs so you're about a-buck-twenty-or-so with the manifolds - a bit much for my girlie-type muscles. AND It’s easier to set the carefully set head down on the new ...
by Max_Effort
Thu Apr 25, 2019 4:58 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Positive Valve Stem Seal Size
Replies: 9
Views: 706

Re: Positive Valve Stem Seal Size

What type of guide was installed? Bronze Guide liners or conversion guides? Do you have a photo? There are various styles and sizes of positive seals. A good measurement is needed. The banded seal, third from left, will be availible to accommodate .550” and is forgiving on size and concentricity (wi...
by Max_Effort
Wed Apr 24, 2019 7:31 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Possible bad head gasket?
Replies: 27
Views: 1507

Re: Possible bad head gasket?

Okay, thank you. What kind of job is replacing the head gasket? Could it be done fairly easily in a weekend? I am fairly handy but have never taken the head off of this engine. The truck is my daily driver so hopefully I could pull it off fairly quickly by myself. Any recommendations on a good gask...
by Max_Effort
Thu Apr 18, 2019 10:21 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 49
Views: 3264

Re: Has anyone ever built something like this?

https://www.voxeljet.com/branchen/cases/zylinderkopf-rekonstruktion-fuer-porsche-legenden/ Interesting idea for custom cylinder head production clive Hoosier Pattern makes 3D printed sand molds. Good for a short run of castings. https://hoosierpattern.com/news/3d-sand-printing-vs-traditional-tooling
by Max_Effort
Thu Apr 11, 2019 8:54 pm
Forum: 240-300 "Big Block" Six Performance
Topic: New life
Replies: 1
Views: 374

Re: New life

Just finished installing a few upgrades to the 85 Hooptie. Removed the stock intake and exhaust systems along with all the smog air pump crap. Installed an Offy intake with a 500 2BBl holley along with a headman three to one header. Finished with a true dual exhaust with turbo mufflers dumped under...
by Max_Effort
Sat Apr 06, 2019 7:14 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 49
Views: 3264

Re: Has anyone ever built something like this?

Can someone explain how you change all bore centers of an in-line six from 4.48” to 4.7” by sleeveing?
I’ve been doing this a long time.. but I don’t get that one.
by Max_Effort
Sat Apr 06, 2019 2:25 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Yet another cam question
Replies: 10
Views: 658

Re: Yet another cam question

682FDFE9-39DA-40DF-9E84-3FF3AA315847.jpeg
by Max_Effort
Sat Apr 06, 2019 2:18 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Yet another cam question
Replies: 10
Views: 658

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 Max_Effort
Tue Apr 02, 2019 8:00 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 49
Views: 3264

Re: Has anyone ever built something like this?

A few of the things I wrote about are on display here. This is still a parent bore at is limit. Plenty of grinding on that block to get everything to clear with 5.25” stroke and 7.8” rods.

viewtopic.php?f=13&t=79219
by Max_Effort
Tue Apr 02, 2019 7:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Has anyone ever built something like this?
Replies: 49
Views: 3264

Re: Has anyone ever built something like this?

This type of build is done with tractor pulling engines. Classes where you have to use the original basic engine, but no limitations on displacement. You can only go so far with the parent bore of the block. FTF writes .060”is safe and that sounds good to me. After that you have cut out most of the ...
by Max_Effort
Sun Mar 31, 2019 9:12 am
Forum: 240-300 "Big Block" Six Performance
Topic: late EFI valve covers
Replies: 6
Views: 658

Re: late EFI valve covers

Also, aside from torching and burning down the garage what is the best way to clean the oily residue off the intake runners? thanx AC Delco 10-3007 top engine cleaner spray. Use it outdoors! Soak it down, put in a plastic bag overnight, then rinse it out. A24435B6-1E13-48DF-A17E-951C8E0F1AB6.jpeg
by Max_Effort
Sat Mar 30, 2019 11:10 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 120
Views: 6057

Re: Fresh Rebuilt 240

The primary reason I prefer to retrofit a street engine to hydraulic roller is reliability. To not “roll the dice” on cam break in. This is especially true for engines that aren’t going to be started and broken in very soon after assy. Particularly for engines that are notoriously bad on break-in wi...
by Max_Effort
Sat Mar 30, 2019 3:57 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 120
Views: 6057

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 Max_Effort
Sat Mar 30, 2019 2:24 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 120
Views: 6057

Re: Fresh Rebuilt 240

I think the larger issue is getting a viable retention device to position the hydraulic lifters. I believe he said that he used the stock Ford 460 Hydrolic Rollers as to the retention device that's what I can't rember. :nod: I’ve never seen a 460 with factory hydraulic roller lifters. Do they exist...
by Max_Effort
Sat Mar 30, 2019 10:32 am
Forum: 240-300 "Big Block" Six Performance
Topic: overhead cam.
Replies: 29
Views: 1911

Re: overhead cam.

Just to see, I'll have to lay a Subaru head gasket on a 300 block. The bore centers are just .0312" closer together on the Subaru.
by Max_Effort
Fri Mar 29, 2019 8:29 am
Forum: 240-300 "Big Block" Six Performance
Topic: Fresh Rebuilt 240
Replies: 120
Views: 6057

Re: Fresh Rebuilt 240

A flat top piston with the Jr head will get you 10:1 compression. You can do a custom piston or look through the forged piston for the Ford 302 in the Summit website. It wouldn't hurt to have a few CCs in the piston top to get a compression ratio closer to 9.6 You will be looking at a cam with arou...
by Max_Effort
Fri Mar 29, 2019 5:18 am
Forum: 240-300 "Big Block" Six Performance
Topic: overhead cam.
Replies: 29
Views: 1911

Re: overhead cam.

Note, NO OHCs, thank God. Don't be fooled by the fact that this 445 ci small block gas burner is slated for trucks. It has racing thoroughbred written all over it. (As an aside, I once drove both Blaine and Brian's race cars. True whiz kids each.) Just like the Fox Mustangs became the "'55 Che...
by Max_Effort
Wed Mar 27, 2019 8:42 pm
Forum: 240-300 "Big Block" Six Performance
Topic: overhead cam.
Replies: 29
Views: 1911

Re: overhead cam.

I was going to make an OHC head, I’d want a four valve, pentroof style chamber head.
To make it more compact and simpler, I’d consider an SOHC four valve design like a Suburu EJ-25 or Dodge neon
BED7AAA5-253C-43CE-B95D-D85FAA072224.jpeg
by Max_Effort
Mon Mar 25, 2019 1:44 pm
Forum: 240-300 "Big Block" Six Performance
Topic: overhead cam.
Replies: 29
Views: 1911

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... The simplified version is: the ele...
by Max_Effort
Mon Mar 25, 2019 12:30 pm
Forum: 240-300 "Big Block" Six Performance
Topic: overhead cam.
Replies: 29
Views: 1911

Re: overhead cam.

There is always plenty of discussion about where the camshaft is located in the engine. Then the car magazines like C&D always calling DOHC modern high tech and a pushrod engine antiquated low tech. Both designs are old, OHC going to back to the very early 1900's. There is no doubt that in a hig...
by Max_Effort
Mon Mar 25, 2019 6:45 am
Forum: 240-300 "Big Block" Six Performance
Topic: Stuck valve locks
Replies: 57
Views: 2653

Re: Stuck valve locks

No, I was speaking of the bronze insert replacements. However if it can easily be converted to adjustable steel guideplates I wouldn’t mind, I think it would require new studs though, as your saying the parent guide is pressed into the head and the stud is threaded into them. Is that correct, or am...
by Max_Effort
Sun Mar 24, 2019 7:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Stuck valve locks
Replies: 57
Views: 2653

Re: Stuck valve locks

Anyone know where to find said kit? The only thing I’m seeing are steel guideplates... I may have answered the wrong question Were you looking for the pedestal to stud rocker kit? Crane cams has a variety of them No, I was speaking of the bronze insert replacements. However if it can easily be conv...
by Max_Effort
Sun Mar 24, 2019 7:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Stuck valve locks
Replies: 57
Views: 2653

Re: Stuck valve locks

Mdixon300f100 wrote:Anyone know where to find said kit? The only thing I’m seeing are steel guideplates...


I may have answered the wrong question

Were you looking for the pedestal to stud rocker kit?

Crane cams has a variety of them
by Max_Effort
Sun Mar 24, 2019 6:11 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Stuck valve locks
Replies: 57
Views: 2653

Re: Stuck valve locks

Sounds like a step was overlooked in the guide liner installation. Once the parent guide is drilled and reamed, there is a special spiraling tool that is run down the parent guide and cuts a thread looking cut the whole length of the inside on the parent guide. This gives the liner a crevice to bit...
by Max_Effort
Sun Mar 24, 2019 6:00 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Stuck valve locks
Replies: 57
Views: 2653

Re: Stuck valve locks

Anyone know where to find said kit? The only thing I’m seeing are steel guideplates... To just replace guides liners, you need a guide liner remover, an installer, and a ball broach. Goodson has the kits and individual parts Also Cylinder head supply, Silver-seal, Regis, etc... Sometimes they are o...
by Max_Effort
Sun Mar 24, 2019 4:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Stuck valve locks
Replies: 57
Views: 2653

Re: Stuck valve locks

They usually can be replaced, assuming the parent metal was properly drilled and reamed beforehand. Once the new bronze sleeve is tapped in place there is a tool that looks a little like a python that swallowed a pig that gets driven through the liner to lock it in, then the guide should be honed t...
by Max_Effort
Sun Mar 24, 2019 9:04 am
Forum: 240-300 "Big Block" Six Performance
Topic: Swap done, engine cranks, no full power stroke
Replies: 45
Views: 2160

Re: Swap done, engine cranks, no full power stroke

Would it be possible to unplug the fuel pump relay, dry the engine out and see if it runs with an external fuel source? WOT during cranking keeps fuel from spraying, does it keep spark from igniting as well? I could try starting fluid that way or with the fuel relay removed If it really just that i...
by Max_Effort
Sun Mar 24, 2019 8:42 am
Forum: 240-300 "Big Block" Six Performance
Topic: Stuck valve locks
Replies: 57
Views: 2653

Re: Stuck valve locks

It has double springs, the inner spring is adout .500 shorter that the outer, and the head is stepped, as well as the retainer. I can’t get the rocker studs to spin, idk if their press in or not, and the guides won’t budge either. I’ll try and get the measurements later today, once I get the rest o...
by Max_Effort
Sun Mar 24, 2019 7:51 am
Forum: 240-300 "Big Block" Six Performance
Topic: Yet another thread about Chevy rockers.
Replies: 25
Views: 1698

Re: Yet another thread about Chevy rockers.

If I might ask how much rocker to valve stem gap did you have with the stock 10.140" pushrods? What is your Int / Exh Camshaft lift? As it turned out I had about 0.010 +/- 0.003 of lash depending on the valve. I did not measure actual lift as my dial indicator is at work 45 miles away and I di...
by Max_Effort
Sat Mar 23, 2019 2:20 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 240 mods update
Replies: 23
Views: 1460

Re: 240 mods update

Some gear, tire, RPM, MPH, calculators

http://wallaceracing.com/calc-gear-tire-rpm-mph.php

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