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Search found 3316 matches

by cjperformance
Mon Oct 14, 2019 4:13 pm
Forum: Engine Tech
Topic: 432" SBF build.
Replies: 51
Views: 8252

Re: 432" SBF build.

What did you change on the converter? The old convertor was 10" and had 5200 static stall. New convertor is an 8" with 5800 static stall. The old convertor felt very tight up to its stall speed and was not very reactive. Would suit a 3 speed trans better(this car runs a Powerglide). New convertor i...
by cjperformance
Thu Oct 10, 2019 5:35 pm
Forum: Engine Tech
Topic: 432" SBF build.
Replies: 51
Views: 8252

Re: 432" SBF build.

We did a convertor swap in this a couple months ago, this was worth just over 2 tenths on the 1/8th best et now 6.127 , havnt run 1/4 mile with this convertor as yet but will soon enough. He got another runner up last weekend so is happy. Next year im keen to do an engine strip/check and some new pi...
by cjperformance
Tue Oct 08, 2019 7:07 pm
Forum: Engine Tech
Topic: Do pushrods generally bend in the middle or near the lifter end?
Replies: 10
Views: 521

Re: Do pushrods generally bend in the middle or near the lifter end?

Most of the bent pushrods i have seen on canted valve engines where the pushrods are not inline with the lifter bore are bent near the lifter, maybe 1/4 - 1/3 the way up the pushrod from the lifter end. Yet on engines where the pushrod is inline with lifter bore its usually bent half way up or close...
by cjperformance
Tue Oct 08, 2019 6:11 pm
Forum: Engine Tech
Topic: engine masters live feed?
Replies: 45
Views: 1814

Re: engine masters live feed?

Hey Bob, no i havnt, do you have a link. Was it a typical stroker 351 or a 400 block? Im guessing stroker? [/quote] Using a factory 2 bolt pillow clevo block with factory cast iron heads,flat tappet cam just made an impressive 603 ft lbs and 759 hp on pump gas https://www.facebook.com/jasonmansweto...
by cjperformance
Tue Oct 08, 2019 3:07 am
Forum: Engine Tech
Topic: engine masters live feed?
Replies: 45
Views: 1814

Re: engine masters live feed?

Personally, I think they should do something like this class again with O.E.M. heads but, allow switching years on different engine sizes, like most backyard enthusiasts would do. (Even offset ground cranks and such). Craig did you see the 408 4v pump gas build by Jason Mansweto? Hey Bob, no i havn...
by cjperformance
Mon Oct 07, 2019 10:42 pm
Forum: Engine Tech
Topic: engine masters live feed?
Replies: 45
Views: 1814

Re: engine masters live feed?

1. Blair Patrick ... FE Ford ...2511 2. Geoff Mummert ... S.B. Ford ... 2504 3. Jon Kaase ... B.B. Chevy ... 2448 4. Clark Hinkle ... B.B. Chevy ... 2411 5. Adney Brown ... S.B. Chevy ... 2405 6. Ted Eaton ... Y Block Ford ... 2358 7. Chris Pelczar ... S.B. Chevy ... 2321 8. Barry Robotnick ... FE ...
by cjperformance
Mon Sep 30, 2019 1:27 am
Forum: Engine Tech
Topic: Trying to turn exhaust flow numbers into something meaningful
Replies: 6
Views: 539

Re: Trying to turn exhaust flow numbers into something meaningful

Stan Weiss wrote:
Sun Sep 29, 2019 11:47 pm
With the way most people flow an intake port are we not really just seeing the difference in efficiency between their radius entry and the intake manifold?

Stan
Yes, that and restriction from size and shape of intake runners.
by cjperformance
Thu Sep 26, 2019 6:40 am
Forum: Engine Tech
Topic: What happen
Replies: 27
Views: 2091

Re: What happen

I have filed heaps of file fit rings, never had one that jammed in the ring groove . When done properly they dont! All it takes is enough of a burr to nearly take up the land clearance, ring still goes in, spins in the groove when felt by hand etc. If the burr is on the lower/loaded side it picks u...
by cjperformance
Wed Sep 25, 2019 5:19 pm
Forum: Engine Tech
Topic: What happen
Replies: 27
Views: 2091

Re: What happen

As i said before, 'File fit rings with burs/chipping left on the end edge. Picks up some piston material and sticks the ring in the groove holding the gap area away from the bore, torched piston' Your ring gap now measures larger as the outside face of the ring has some wear from the trauma. This is...
by cjperformance
Tue Sep 17, 2019 7:46 am
Forum: Engine Tech
Topic: What happen
Replies: 27
Views: 2091

Re: What happen

File fit rings with burs/chipping left on the end edge. Picks up some piston material and sticks the ring in the groove holding the gap area away from the bore, torched piston.
by cjperformance
Sat Aug 31, 2019 8:30 pm
Forum: Engine Tech
Topic: Theoretical idle vacuum question
Replies: 17
Views: 1439

Re: Theoretical idle vacuum question

Cam wise, being the same everywhere(you did say a couple deg off of the Intake) you will see more vac and more hp. The intake manifold change being smaller CSA may or may not hurt peak hp. Do you know average csa of both intakes? Hopefully the Pi intake is near the mark csa wise. The smaller csa por...
by cjperformance
Thu Aug 29, 2019 5:14 pm
Forum: Engine Tech
Topic: It runs faster on low octane fuel?
Replies: 31
Views: 1535

Re: It runs faster on low octane fuel?

Formula 1 teams use lowest octane rating allowed by rules, which is 95, european ron/mon I think. Because it makes most power. Yes I had heard some years back that F1 had a 'minimun' octane rule , due the the very high rpm they were looking for the fastest burning fuel they were allowed. That said ...
by cjperformance
Wed Aug 28, 2019 12:45 am
Forum: Engine Tech
Topic: Crank failure
Replies: 74
Views: 3094

Re: Crank failure

MadBill wrote:
Tue Aug 27, 2019 11:00 pm
Not much journal overlap there!
Yes Bill, very scary looking ammount of material on these cranks in this area!
by cjperformance
Tue Aug 27, 2019 9:00 pm
Forum: Engine Tech
Topic: It runs faster on low octane fuel?
Replies: 31
Views: 1535

Re: It runs faster on low octane fuel?

Formula 1 teams use lowest octane rating allowed by rules, which is 95, european ron/mon I think. Because it makes most power. Yes I had heard some years back that F1 had a 'minimun' octane rule , due the the very high rpm they were looking for the fastest burning fuel they were allowed. That said ...
by cjperformance
Tue Aug 27, 2019 8:55 pm
Forum: Engine Tech
Topic: Crank failure
Replies: 74
Views: 3094

Re: Crank failure

Steve.k wrote:
Tue Aug 27, 2019 8:53 pm
Thanks guys. Tim does have these 4.25 and now molnar 4.35.
Nice, what size big end on the 4.35 crank?