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Search found 1367 matches

by Schurkey
Mon Jan 20, 2020 12:58 pm
Forum: Engine Tech
Topic: Main studs; I should have asked the Speedtalk community first...
Replies: 30
Views: 1694

Re: Main studs; I should have asked the Speedtalk community first...

Does Chevy still use 300M head-bolts? I figure a 300M bolt is about the BEST there is for bolts. My ancient GM "Standard" parts catalog--nuts, bolts, clips, wire connectors, all the piddly crap that any of the GM divisions might use--does indeed show "300M" as a "Grade 8" bolt spec., although as I ...
by Schurkey
Sat Jan 18, 2020 11:16 pm
Forum: Engine Tech
Topic: Measuring for pushrods...part deux
Replies: 46
Views: 1027

Re: Measuring for pushrods...part deux

oh ya,,dont forget to check your ex too When it's me, I look for narrowest sweep while staying reasonably centered. If I can't get that, I've got non-compatible parts or the valve tip heights are wrong. I look at intake and exhaust on #1; and intake and exhaust on whatever the companion cylinder to...
by Schurkey
Thu Jan 16, 2020 12:49 pm
Forum: Engine Tech
Topic: Molnar vs K1 vs compstar crank and rods
Replies: 42
Views: 1292

Re: Molnar vs K1 vs compstar crank and rods

midnightbluS10 wrote:
Thu Jan 16, 2020 5:56 am
Afaik, some of Molnars stuff is imported. It's not all made in USA. Their entry level stuff specifically is imported, as I recall.
Some? I thought it was ALL Chinese-sourced.

IF (big IF) some of it is domestic, that'd be great news to me.
by Schurkey
Wed Jan 15, 2020 12:35 am
Forum: Engine Tech
Topic: Valve lap on boosted high mileage 5.3?
Replies: 17
Views: 1774

Re: Valve lap on boosted high mileage 5.3?

So as i understand 20% leak rate is still considered good. That you shouldn't be worried unless it starts going north of 30%. Im going by the store tonight to pick up a cylinder leak down tester. I still might pull the heads and rebuild them though. I just did a leak down on all 8 cylinders. They a...
by Schurkey
Tue Jan 14, 2020 1:45 pm
Forum: Engine Tech
Topic: Measuring for pushrods...part deux
Replies: 46
Views: 1027

Re: Measuring for pushrods...part deux

For best mid-lift geometry, which also gave me max lift at the valve, I came up with 7.900” with the lifter plunger fully depressed (about 0.0875” of plunger travel). Varying.050” either way gave less lift at the valve. So I “think” that PR length is good. But...it looks like 7.900” is too long jud...
by Schurkey
Mon Jan 06, 2020 11:25 pm
Forum: Engine Tech
Topic: Anybody interested in a webinar on assembly & break in lubes ?
Replies: 11
Views: 492

Re: Anybody interested in a webinar on assembly & break in lubes ?

The AERA is giving a Webinar on Assembly Lubes and Break In oil on Jan 16th It is hosted by Lake Speed Jr. If you are interested here is a link to the sign up sheet: https://register.gotowebinar.com/register/273815082259579404?source=CC Is that for general public or members only? Looking at the sig...
by Schurkey
Thu Jan 02, 2020 12:10 pm
Forum: Engine Tech
Topic: GM EOS
Replies: 15
Views: 832

Re: GM EOS

Does the new EOS have any zddp in it? Define "new" EOS. Here's the MSDS for AC-Delco 10-4021; which is cross-listed as GM 88862587. Prepared 01 June 2015. http://msds.fmpco.com/images/fmp_msds/10-4021__88862587_-_ACDelco_E.O.S._Assembly_Lubricant.pdf Phosphorodithioic acid, O,O-di- C1-14-alkyl este...
by Schurkey
Thu Jan 02, 2020 8:06 am
Forum: Engine Tech
Topic: Customer head gasket.
Replies: 9
Views: 556

Re: Customer head gasket.

If the block has had the cylinders moved around to maximize wall thickness, I'd expect to need a larger-bore gasket, since the bores in the gasket aren't going to be shuffled to match the cylinders.

There are offset dowel pins, but I've never used them.
by Schurkey
Wed Jan 01, 2020 9:38 pm
Forum: Engine Tech
Topic: GM EOS
Replies: 15
Views: 832

Re: GM EOS

Any time I fire a fresh engine, I install a Frantz asswipe bypass oil filter. The filter may not stay on past the first 500 or thousand miles; sometimes it's permanent. Amsoil also sells a bypass oil filter assembly. With the bypass oil filter, there's zero need to change oil right away, the bypass ...
by Schurkey
Sat Dec 28, 2019 4:19 pm
Forum: Engine Tech
Topic: ARE ALL sbc 010 BLOCKS HIGH NICKEL????
Replies: 99
Views: 24503

Re: ARE ALL sbc 010 BLOCKS HIGH NICKEL????

1. I'm getting confused between the CASTING NUMBER xxxxxxxxx010 blocks, and the blocks that have 010 and/or 020 cast into the timing-cover area in the front. 2. If the 010 and 020 in the front referred to certain cores used in the process, wouldn't there be a bunch of OTHER numbers in there, from th...
by Schurkey
Sun Dec 22, 2019 10:10 pm
Forum: Engine Tech
Topic: spark plugs in the 21st century
Replies: 7
Views: 633

Re: spark plugs in the 21st century

Half the reason to pull the plugs at the OEM intervals is to get them out and re-apply antiseize before they "weld" themselves to the head threads. God bless Iridium. I bought replacements, and yanked the plugs out of SWMBO's Trailblazer at 90K. They "snapped" as the threads began to turn, but didn'...
by Schurkey
Fri Dec 20, 2019 11:26 am
Forum: Forum Help / Questions / Tips
Topic: Server times out
Replies: 50
Views: 825

Re: Server times out

For whatever difference it makes, EVERY time I have trouble connecting, it's late-evening or "I'm up way too late at night". Never a problem during the day.
by Schurkey
Thu Dec 19, 2019 7:28 pm
Forum: Engine Tech
Topic: 6.0 p300
Replies: 18
Views: 650

Re: 6.0 p300

P0300? WHAT SCAN TOOL? If it's a cheap "consumer grade" scan tool, you might be getting incorrect information. Shitty scan tools ignore the "real" code, but only display the generic code instead. In this case, you're being told it's a "random" misfire, but the real code could be cylinder-specific. A...
by Schurkey
Tue Dec 17, 2019 6:02 pm
Forum: Engine Tech
Topic: Hot rod mag engine masters- Packard engine!
Replies: 22
Views: 3296

Re: Hot rod mag engine masters- Packard engine!

Truckedup wrote:
Tue Dec 17, 2019 8:40 am
Packard's repuatation for good machine work got them the license to build Merlin Aircraft engines.
From what I've heard--all of it second, or third hand--Packard built better Merlins than Rolls-Royce.
by Schurkey
Sun Dec 15, 2019 8:38 pm
Forum: Engine Tech
Topic: ? will shop Oven Bake out cash-for-clunkers glue ?
Replies: 33
Views: 961

Re: ? will shop Oven Bake out cash-for-clunkers glue ?

The supposed procedure was to dump the Waterglass into the oil, then run the engine until it seized. The whole point was to make the engine unusable. So if the engine seizes, what do you expect happens to the various moving parts? You'd be lucky if it didn't spin crank or cam bearings, and therefore...