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Search found 1329 matches

by Schurkey
Tue Oct 15, 2019 2:27 pm
Forum: Engine Tech
Topic: Re-drilling 72 degree angle sbc heads.
Replies: 10
Views: 465

Re: Re-drilling 72 degree angle sbc heads.

I thought the Vortec heads were so thin on the intake face that drilling for the old 6-bolt pattern didn't leave enough material to have strength for the threads.
by Schurkey
Mon Oct 14, 2019 8:36 pm
Forum: Engine Tech
Topic: Re-drilling 72 degree angle sbc heads.
Replies: 10
Views: 465

Re: Re-drilling 72 degree angle sbc heads.

Curious: Why re-drill those heads? Are any of them worth the effort? The TBI heads with that bolt angle are pathetic.
by Schurkey
Sat Oct 12, 2019 10:36 pm
Forum: Engine Tech
Topic: 180° cranks
Replies: 20
Views: 771

Re: 180° cranks

being a factory effort, this is the real deal, factory resource, kind of development program. That's what GM claimed with the Vega, and the Citation. And the V8-6-4. And the HT4100. :) Far as I know, the only benefit is that the exhaust tuning can be better. You can do a little better with the inta...
by Schurkey
Fri Oct 11, 2019 9:28 pm
Forum: Engine Tech
Topic: Idea for pre lubing oil galleries
Replies: 34
Views: 2683

Re: Idea for pre lubing oil galleries

swampbuggy wrote:
Mon Jul 02, 2018 11:58 pm
first time on the dyno...and EVERY time there after.
Strikes me as "stirring making the tea sweet, not the sugar".

Too much time, money, effort, and enthusiasm being wasted on nothing important. A bazillion engines every day get fired-up without being pressure pre-lubed.
by Schurkey
Fri Oct 11, 2019 3:03 pm
Forum: Engine Tech
Topic: tall deck and intake spacer plates
Replies: 10
Views: 485

Re: tall deck and intake spacer plates

Sorry. Methanol as a fuel never occurs to me. They sold M-05 (methanol-based "Gasohol") here for six months or so before changing to E-10; back around 1980--'81. I've never had a methanol-fueled race car.
by Schurkey
Thu Oct 10, 2019 6:50 pm
Forum: Engine Tech
Topic: tall deck and intake spacer plates
Replies: 10
Views: 485

Re: tall deck and intake spacer plates

Whatever you decide make sure it will hold up to fuel. From the last line of the instructions-- "NOTE: Not recommended for use on head gaskets or on parts in contact with gasoline." https://www.permatex.com/products/gasketing/ultra-series-gasket-makers/permatex-ultra-grey-rigid-high-torque-rtv-sili...
by Schurkey
Thu Oct 10, 2019 6:40 pm
Forum: Engine Tech
Topic: 180° cranks
Replies: 20
Views: 771

Re: 180° cranks

Far as I know, the only benefit is that the exhaust tuning can be better.

The downside is vibration/shake.

I don't know about balance factors, and how they may or may not make life easier on the main bearings/main saddles.
by Schurkey
Tue Oct 08, 2019 12:16 pm
Forum: Engine Tech
Topic: Opinions of guides in import heads
Replies: 19
Views: 710

Re: Opinions of guides in import heads

"Import heads" = Toyota/Audi/Kia/etc.?

or

"Import heads" = low-budget Pro-Comp and generic replacements for SBC, SBF, etc.?
by Schurkey
Tue Oct 08, 2019 12:34 am
Forum: Engine Tech
Topic: bbc oil pump on sbc iron eagle 434
Replies: 16
Views: 728

Re: bbc oil pump on sbc iron eagle 434

The M-77 was the std. BBC pump as well as there was a M-99 as well. it was the BBC pump with the sm blk PU location just in a 3/4" tube. used 100's of them as the sm blk HV pumps were going through quality changes and there was a ton of broken off pumps cause they were redesigning the bodies as we ...
by Schurkey
Mon Oct 07, 2019 10:38 pm
Forum: Engine Tech
Topic: Late Qjet idle mix screw range?
Replies: 16
Views: 398

Re: Late Qjet idle mix screw range?

turbo camino wrote:
Mon Oct 07, 2019 9:35 pm
f it runs good everywhere else I'll stop worrying about the number of turns.
Uncommon wisdom.
by Schurkey
Tue Oct 01, 2019 10:28 am
Forum: Engine Tech
Topic: When are you switching to synthetic?
Replies: 79
Views: 3074

Re: When are you switching to synthetic?

Schurkey, where are you plugging the toilet roll filter in and out of the engine? Tee off the oil pressure sensor port, or any convenient oil port. Back in via a bung in the oil pan. A guy could add a return port at the oil fill cap, or somewhere along the valve cover, too. Dash 4 hose is plenty. A...
by Schurkey
Fri Sep 27, 2019 2:44 pm
Forum: Engine Tech
Topic: Holley 4di Projection cleanup and texture experiment
Replies: 24
Views: 750

Re: Holley 4di Projection cleanup and texture experiment

If those injectors are working well for you, fine. Be aware that Holley replaced them with an updated injector that doesn't have a black "rubber" cap over the top. Last I looked, Holley was still selling the updated injectors and a "conversion kit", but they were expensive and that was perhaps two y...
by Schurkey
Wed Sep 25, 2019 5:51 pm
Forum: Engine Tech
Topic: 20th century manifold reconfigured for 21st century
Replies: 24
Views: 1211

Re: 20th century manifold reconfigured for 21st century

Gotta keep the iron manifold?
by Schurkey
Sat Sep 21, 2019 10:04 pm
Forum: Engine Tech
Topic: Combustion chamber comparison
Replies: 33
Views: 1467

Re: Combustion chamber comparison

ProPower engines wrote:
Sat Sep 21, 2019 7:02 pm
I have seen a mod a guy here posted some years back that cut a small slot from the quench pad center towards the exh. valve to help with cooling and swirl.
A search for "somender-singh" would yield more text than you could read. Might start with https://somender-singh.com/
by Schurkey
Tue Sep 17, 2019 12:47 pm
Forum: Engine Tech
Topic: 406 sbc rotating assy
Replies: 27
Views: 1342

Re: 406 sbc rotating assy

rfoll wrote:
Tue Sep 17, 2019 12:04 pm
Everything I have heard about Skip White orders is there is always a problem.
Does Skip White sell anything but bottom-feeder Chinese crap?