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Search found 147 matches

by Mummert
Tue May 05, 2020 5:25 pm
Forum: Engine Tech
Topic: Piston oil squirters in NASCAR engines
Replies: 39
Views: 3314

Re: Piston oil squirters in NASCAR engines

Wrist pin oil 100% mandatory, especially with smaller diameters and high vacuum.
by Mummert
Sat Apr 11, 2020 6:42 pm
Forum: Engine Tech
Topic: 2 heads better than 1 - power porting E7TE iron.
Replies: 625
Views: 94097

Re: 2 heads better than 1 - power porting E7TE iron.

I am amazed at 42 pages of discussion. The small block Ford has been hindered by the lack of a good cylinder head since DAY 1. IMHO "only" , Ford engineers were not given the task of building a "race" engine around it initially. Ford was also well known for building special parts "for itself" that ...
by Mummert
Wed Apr 08, 2020 9:51 pm
Forum: Engine Tech
Topic: 8mm Stems and Keepers
Replies: 13
Views: 922

Re: 8mm Stems and Keepers

PEP had a retainer for LS that took 1.440 diameter. They were tough to track down.
by Mummert
Mon Apr 06, 2020 9:33 pm
Forum: Engine Tech
Topic: Mismatched 289 combo
Replies: 32
Views: 1693

Re: Mismatched 289 combo

Heads and cam will work to just over 300hp RW with a stick. Auto should be mid 250's. 3.50 rear gear with a C4. 2750 rpm with a 25-26" rear tire @65mph. Leave the stall. Its not that it cant use less, but it will turn into a bigger dog if you tighten up the converter. Headers, Headers. Try and find ...
by Mummert
Fri Apr 03, 2020 9:05 pm
Forum: Engine Tech
Topic: alusil piston in sleeved block
Replies: 12
Views: 843

Re: alusil piston in sleeved block

Add about .001"-.0025" clearance depending on what alloy pistons are made of. Nikasil alum. cylinder can run tight clearance because expansion rates of cylinder and piston are similiar. On a 98mm nikasil cylinder, .001"-.0015" typical clearance with 2618 alloy.
by Mummert
Tue Mar 24, 2020 10:05 pm
Forum: Engine Tech
Topic: 5 bolt SBF rear pattern blueprint
Replies: 13
Views: 995

Re: 5 bolt SBF rear pattern blueprint

Most of the Ford machining I've seen has been consistent enough per any given fixture. Now to say the bellhousing end is dead nuts with the timing cover end or the cylinder head deck might be a stretch. We had to surface the timing cover end of a block once, stood it up on the bellhousing end clampe...
by Mummert
Thu Jan 30, 2020 11:03 pm
Forum: Engine Tech
Topic: Engine Masters
Replies: 87
Views: 2870

Re: Engine Masters

If people spent more time working on motors :lol:, instead of quoting crap from the dictionary the sport wouldn't be in the decline that it is. Car people have always used slang , acronyms, abbreviations, or terms that roll off the tongue easier. Many times because they're talkers and they want to g...
by Mummert
Fri Dec 13, 2019 6:52 pm
Forum: Engine Tech
Topic: Y Block Ford Cylinder Heads
Replies: 8
Views: 942

Re: Y Block Ford Cylinder Heads

We'll be machining heads Jan 1st, Cliff.
by Mummert
Sat Oct 26, 2019 10:26 pm
Forum: Engine Tech
Topic: valve lock wedging
Replies: 6
Views: 651

Re: valve lock wedging

if you assemble a valve with locks in the retainer in your hands and pull on it should there be a really tight wedging action so that the retainer stays in place by itself and can support its own weight? i have some 7 degree locks and retainers and some wedge and others don't. all are 7 degree for ...
by Mummert
Sat Oct 26, 2019 8:17 pm
Forum: Engine Tech
Topic: Air flow vs valve size
Replies: 10
Views: 1629

Re: Air flow vs valve size

Is the valve the only area in a port that you should look at when considering flow coefficient?
Is it smart to use the valve as the determining factor for you flow coefficient if you feel that it is too big for operating range?
by Mummert
Thu Oct 24, 2019 7:42 pm
Forum: Engine Tech
Topic: Air flow vs valve size
Replies: 10
Views: 1629

Re: Air flow vs valve size

I don't see much wrong with a Stude combustion chamber, but I saw some heads on the Jalopy Journal and the exhaust valves are huge! What size are they in the cnc ported heads.
by Mummert
Mon Oct 21, 2019 2:40 pm
Forum: Engine Tech
Topic: Cam selection for budget 351w...splitting hairs
Replies: 6
Views: 573

Re: Cam selection for budget 351w...splitting hairs

Isky 256 and 264 mega work well, we ran a crane like that, bought it about 20 years almost identical specs, it was noisy, and would get louder the longer you drove it. We tried different amounts of preload, even replaced the lifters, pulled the old ones out and they looked perfect. I'm sure they are...
by Mummert
Sat Oct 19, 2019 4:40 pm
Forum: Engine Tech
Topic: Under performing 357 sbc
Replies: 33
Views: 2172

Re: Under performing 357 sbc

The heads stock only move about 290s cfm on my bench and for that size runner it makes them a turd velocity wise. You port them and really wake them up but then they are larger than what you can use. As they are now with your combo the heads are already borderline. The older hurricane intakes are n...
by Mummert
Thu Oct 17, 2019 3:26 am
Forum: Engine Tech
Topic: EMC 289
Replies: 65
Views: 4042

Re: EMC 289

Years back, we played with perfomers rpm, which I believe are the same as E-street but with better parts, and vic jrs,. I liked the performer rpms pre 2003' before they changed the casting, on smaller engines. If there is something to be learned from this whole project, what it takes to make 450 hp...
by Mummert
Wed Oct 16, 2019 4:17 pm
Forum: Engine Tech
Topic: Under performing 357 sbc
Replies: 33
Views: 2172

Re: Under performing 357 sbc

256-260 int, will get a 357 in the 72-7500 range with your style of head. the exhaust should be based off of the exhaust system. If your running headers and collecters only, about 5 degrees less exh duration will be pretty stout. If you start adding tail pipe or collecter extensions to it than you n...