Search found 754 matches
- Tue Apr 16, 2024 3:23 am
- Forum: Engine Tech
- Topic: Tow Truck Engine
- Replies: 11
- Views: 645
Re: Tow Truck Engine
I figure that the best compromise, would be a 224° @ .050 SR cam lobe for what you want. The longest .020 duration lobe I could find for that .050 dur was 262°, in a SR. With a 115 ICL, you could do it with the 72cc head but,you'd have to run ~.025 deck clearance on the piston to get by with 92 oct ...
- Sun Apr 14, 2024 4:45 pm
- Forum: Engine Tech
- Topic: dynamic compression street cam ( cont...)
- Replies: 11
- Views: 471
Re: dynamic compression street cam ( cont...)
It's not the overlap that bleeds off compression, it's the IVC position. The later it closes, the less air is trapped.
- Sat Apr 13, 2024 12:26 pm
- Forum: Engine Tech
- Topic: Tow Truck Engine
- Replies: 11
- Views: 645
Re: Tow Truck Engine
I would change out the solid roller. A new cam will be +/- $650. For about 1/2 that cost, you can go to a HFT cam and lifters.
For your purpose, you don't need the ramps or lift that the roller can give.
For your purpose, you don't need the ramps or lift that the roller can give.
- Thu Apr 11, 2024 3:09 am
- Forum: Engine Tech
- Topic: 11.5 compression, Iron Head, 91 octane
- Replies: 40
- Views: 1701
Re: 11.5 compression, Iron Head, 91 octane
Tuner, I'm interested in how you got this slope, "20 at 2000 with a slope to 26 at 6000".
What kind of springs did you use for that or what tricks were involved?
What kind of springs did you use for that or what tricks were involved?
- Fri Apr 05, 2024 8:10 pm
- Forum: Engine Tech
- Topic: Thunderbird racers
- Replies: 7
- Views: 335
Re: Thunderbird racers
I gotta ask, why not a 351 based SBF?
Either a Bill Elliott inspired C or a W.
Either a Bill Elliott inspired C or a W.
- Tue Apr 02, 2024 1:08 pm
- Forum: Engine Tech
- Topic: Solid roller spring suggestions please
- Replies: 15
- Views: 1092
Re: Solid roller spring suggestions please
On a similar cam (270 @ .050) but, 1.76 RR (.710 valve lift), Bullet recommended 220/230 seat pressure and 575/620 open.
WRM's 1343 PAC's fit that bill.
WRM's 1343 PAC's fit that bill.
- Mon Apr 01, 2024 12:07 pm
- Forum: Engine Tech
- Topic: 351w crank specs
- Replies: 7
- Views: 536
Re: 351w crank specs
Check out the different bearing suppliers for the thickness of the bearing shells. Find a shell that is .0005 thinner that your Clevite's and get a 1/2 set. Replace one side on the rods that you want to open up.
- Thu Mar 28, 2024 12:42 pm
- Forum: Engine Tech
- Topic: Any of you guys have an F.E. Ford manual flywheel sitting around ?
- Replies: 6
- Views: 439
Re: Any of you guys have an F.E. Ford manual flywheel sitting around ?
Straight from the horses mouth.
- Thu Mar 28, 2024 4:28 am
- Forum: Engine Tech
- Topic: Any of you guys have an F.E. Ford manual flywheel sitting around ?
- Replies: 6
- Views: 439
Re: Any of you guys have an F.E. Ford manual flywheel sitting around ?
The factory spec for the crankshaft pilot diameter is 2.499/2.500, add what ever clearance you want to it.
- Sun Mar 24, 2024 5:08 pm
- Forum: Engine Tech
- Topic: What can I do do with old parts catalogs?
- Replies: 14
- Views: 814
Re: What can I do do with old parts catalogs?
If you catalog them and list them on this site and others, I'm sure you could get rid of them and maybe make a buck or two.
I'd be interested in any piston catalogs.
I'd be interested in any piston catalogs.
- Sun Mar 24, 2024 12:30 pm
- Forum: Vintage/Classic/Historical Engine Tech
- Topic: Pondering about flathead potentials
- Replies: 742
- Views: 64196
Re: Pondering about flathead potentials
Wouldn't it be difficult, if not impossible to have any compression, with a layout like that?To improve flow, the chamber should be re-designed so that instead of two tight 90 degrees turns the gas mix would do one not-so-tight 180 degrees turn.
- Sun Mar 24, 2024 11:55 am
- Forum: Engine Tech
- Topic: Solidft to solid roller
- Replies: 9
- Views: 706
Re: Solidft to solid roller
That's why I suggested going to a hyd roller. You can get nearly the same adver & .050 timing with those. For example you can have a Howards lobe that is:
268/215, .313 or .333 lobe lift or a 282/229 and 6 different lobe lifts from .300 to .374
Added:
278/225, with 5 lobe lifts from .300 to .350
268/215, .313 or .333 lobe lift or a 282/229 and 6 different lobe lifts from .300 to .374
Added:
278/225, with 5 lobe lifts from .300 to .350
- Thu Mar 21, 2024 12:42 pm
- Forum: Engine Tech
- Topic: Solidft to solid roller
- Replies: 9
- Views: 706
Re: Solidft to solid roller
You'll have a hard time finding a solid roller to fit your needs. Most off the shelf SR are for race engines. You could do a SR custom cam though. Howards has lobes that will do it.
I would suggest a hyd roller, there are lots of those in the duration and lift that you will want.
I would suggest a hyd roller, there are lots of those in the duration and lift that you will want.
- Wed Mar 20, 2024 3:09 am
- Forum: Engine Tech
- Topic: Smaller Cam..Retard or Not?
- Replies: 11
- Views: 576
Re: Smaller Cam..Retard or Not?
If you move it from 111 ICL to 108 ICL, your advancing it 3°, 2° advanced from straight up. Doing that should lower your peak rpm a little but, increase your mid range a little and maybe your average hp, in the rpm range you use. Adding 20° to your duration, will raise your peak rpm by about 500 rpm...
- Fri Mar 15, 2024 6:34 pm
- Forum: Engine Tech
- Topic: FE Ford lifter bank angle?
- Replies: 9
- Views: 567