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Search found 1480 matches

by Schurkey
Fri May 14, 2021 8:47 pm
Forum: Engine Tech
Topic: Iron crankshaft welding
Replies: 8
Views: 394

Re: Iron crankshaft welding

Can the ford 4MA cleveland crankshaft rod journal be welded and run without problems. Is it actually made from cast iron or more likely is it a cast steel crank? Cast steel? So far as I know, every "cast steel" crankshaft is actually made of cast iron, having enough carbon to place it well above th...
by Schurkey
Tue May 04, 2021 8:55 pm
Forum: Engine Tech
Topic: externally balanced 89 Chevy flywheel interchangeability
Replies: 16
Views: 582

Re: externally balanced 89 Chevy flywheel interchangeability

One of my flexplates--the one I bought new--was almost certainly a Pioneer. However, Summit doesn't keep records that long, so I can't verify. The other was a beautiful gold color, had the SFI sticker, but no brand name as I bought it from a Craigslist ad--the original owner bought it but didn't use...
by Schurkey
Mon May 03, 2021 5:03 pm
Forum: Engine Tech
Topic: externally balanced 89 Chevy flywheel interchangeability
Replies: 16
Views: 582

Re: externally balanced 89 Chevy flywheel interchangeability

I bought a Vortec 5.7L shortblock from a Treasure Yard as the basis for building a replacement engine for my beater pickup. The Vortec was pulled due to a "rod knock". Once the engine was removed, they discovered that the flexplate was broken into two pieces--there was a full-circle crack surroundin...
by Schurkey
Sun Apr 18, 2021 12:53 am
Forum: Vintage/Classic/Historical Engine Tech
Topic: Why is the #1 cylinder front right? ford v8
Replies: 29
Views: 1253

Re: Why is the #1 cylinder front right? ford v8

Or International using #8 cylinder for ignition timing It's been a bunch of years since I've timed an Intercoursable. I'm thinking that the torsional damper is unbalanced, having a wide section and a narrow section to allow for the unbalance. The narrow section corresponds to the #1 TDC on the timi...
by Schurkey
Thu Apr 08, 2021 11:16 pm
Forum: Engine Tech
Topic: Late 1960s Chevrolet crate engines?
Replies: 26
Views: 1614

Re: Late 1960s Chevrolet crate engines?

Mid-to-late '70s. Let's say '77. Local Chevy dealer had "display" engines in the parts department. LT-1 350 partial engine (Short blocks), LS-7 Long-block, even a Vega short-block. There was a counter-display like you'd see in a candy store, with 2.05 valves, the off-road camshafts, high-compression...
by Schurkey
Wed Mar 24, 2021 4:03 am
Forum: Engine Tech
Topic: Dumb QOTD: Why does load induct pre-ignition / detonation?
Replies: 23
Views: 1194

Re: Dumb QOTD: Why does load induct pre-ignition / detonation?

Why is it that WOT at 2800rpm, 32deg ignition, uphill, knocks but 6000rpm, WOT, @ 36deg ign advance runs great? Now, I cannot say for sure that the ignition advance is as stated, but it does seem that low-mid rpm is more likely to knock, ping. Why? 1. Greater cylinder filling at lower RPM (Higher c...
by Schurkey
Wed Mar 17, 2021 11:14 pm
Forum: Engine Tech
Topic: Hit Water
Replies: 31
Views: 1722

Re: Hit Water

Especially if the seat is pressed-in with anaerobic sealer.

Sometimes it needs some "encouragement" with waterglass on the back side.
by Schurkey
Sat Mar 06, 2021 9:16 pm
Forum: Engine Tech
Topic: Spark plug reach
Replies: 6
Views: 412

Re: Spark plug reach

There's got to be a better cross-over from the NGK number to an Autolite number. Or just continue to use NGKs. This assumes that the NGK is correct, and the Autolite is too long. I've seen engines where they used too short of a spark plug reach, which I expect is every bit as bad as one with too lon...
by Schurkey
Tue Mar 02, 2021 7:15 pm
Forum: Engine Tech
Topic: What's the best CAST IRON 2 barrel intake manifold for 350 sb
Replies: 4
Views: 461

Re: What's the best CAST IRON 2 barrel intake manifold for 350 sb

Didn't GMPP list a two-barrel iron intake specifically for race use? I know they had an iron 4-barrel based on the old Z-28 aluminum casting.
by Schurkey
Mon Mar 01, 2021 4:13 am
Forum: Engine Tech
Topic: Piston ring querie
Replies: 7
Views: 558

Re: Piston ring querie

AA Performance wrote: Sun Feb 28, 2021 3:27 am Ordered a ring set for a 4.430" bore and wanted file backs. Got sent ring set to suit 4.440 +.005 Pt # TS9190-195.
Why would they send you .005-over rings for a bore that's already .010-over the size you need?
by Schurkey
Sat Feb 20, 2021 2:13 pm
Forum: Engine Tech
Topic: Any freshwater boat engine experts here?
Replies: 21
Views: 929

Re: Any freshwater boat engine experts here?

Cam drive works too, but if he's starting from nothing a crank driven raw water pump might be easier to fab up. Good point. Who wants to cast an aluminum front cover for a Packard that would include a marine water pump mount? I expect the pump itself would be smaller, since it's turning twice as fa...
by Schurkey
Sat Feb 20, 2021 9:59 am
Forum: Engine Tech
Topic: Any freshwater boat engine experts here?
Replies: 21
Views: 929

Re: Any freshwater boat engine experts here?

Yup, look at the belt drive pumps or those driven off of the front of the crankshaft. Especially those setups that came on inboard ski boats. Not much bigger than a divorced reservoir power steering pump. The water intake is a simple fitting in the hull of the boat. BBC, flatbottom V-drive ski boat...
by Schurkey
Sat Feb 20, 2021 9:20 am
Forum: Engine Tech
Topic: Shelf life of unopened synthetic "racing" engine oil?
Replies: 51
Views: 1774

Re: Shelf life of unopened synthetic "racing" engine oil?

If the additive package drops out of the oil, the oil is junk. I watched an online seminar on ZF transmissions a week ago or so. In the beginning of the seminar, they said that ZF will only sell their magic transmission fluid in quart bottles, because the additive package falls out of suspension. W...
by Schurkey
Wed Feb 17, 2021 12:17 am
Forum: Engine Tech
Topic: Cross Ram intake install
Replies: 12
Views: 596

Re: Cross Ram intake install

tjs44 wrote: Tue Feb 16, 2021 9:54 pmPics
I don't know how well that top-end works, but as historical artifacts and "bling", that's near-unbeatable. Hat's off to you.
by Schurkey
Mon Feb 15, 2021 10:57 pm
Forum: Engine Tech
Topic: Cross Ram intake install
Replies: 12
Views: 596

Re: Cross Ram intake install

What engine?

If the bolt holes aren't blind, I'd expect pipe-thread sealer to prevent oil coming up the threads.