New domain: www.Speed-Talk.com

The forum is currently running on the new domain and server. The old domain will remain active for a short while to forward any (less frequent) visitors.
IMPORTANT: Update your bookmarks to https://www.speed-talk.com/forum/

Search found 1466 matches

by Krooser
Tue Sep 17, 2019 3:24 pm
Forum: Engine Tech
Topic: Redneck Ring Grinder
Replies: 2
Views: 525

Redneck Ring Grinder

by Krooser
Tue Sep 10, 2019 10:56 pm
Forum: Engine Tech
Topic: Tight lash camshaft questions
Replies: 31
Views: 1400

Re: Tight lash camshaft questions

travis wrote:
Mon Sep 09, 2019 2:09 am
Wasn’t the -097 Duntov in the FI 283’s like .012”/.018”? They have been around a while
Nope...they were called "30-30" 's for a reason.

The valve noise was enough to drive off most street racers...if it's that loud it must be fast.
by Krooser
Mon Sep 09, 2019 9:11 pm
Forum: Engine Tech
Topic: Gen II Hemi Valve Seat Install
Replies: 3
Views: 209

Re: Gen II Hemi Valve Seat Install

Thanks... I'll likely remove the seats myself but have a local shop reinstall the new ones. This guy does lots of good work but not much performance stuff so I feel better guiding him to the correct seats and materials. I wish I had learned more of this machine work stuff instead of chasing skirts w...
by Krooser
Mon Sep 09, 2019 6:41 pm
Forum: Engine Tech
Topic: Gen II Hemi Valve Seat Install
Replies: 3
Views: 209

Gen II Hemi Valve Seat Install

Anything special that you guys can advise on replacing the valve seats on the early Gen III Hemi's? Materials, supplier, how much interference fit? I've heard the factory fit was only .003 to .005 and that was the reason so many dropped out after overheating. I'll be running stainless valves. Any ad...
by Krooser
Fri Sep 06, 2019 1:21 pm
Forum: Engine Tech
Topic: Bearing clearance question...
Replies: 9
Views: 970

Re: Bearing clearance question...

FWIW, we just did a dyno test and found 20W-50 cost five horsepower over 10-40. Dynos don't get the oil as hot for as long as does a race, so that's why the stiffer oil is used, but what are the NASCAR guys using these days? Most Nascar teams either use a special blend, formulated by their partner/...
by Krooser
Thu Sep 05, 2019 2:42 pm
Forum: Engine Tech
Topic: Bearing clearance question...
Replies: 9
Views: 970

Re: Bearing clearance question...

:notworthy: :notworthy: :notworthy: :notworthy: :notworthy:
by Krooser
Wed Sep 04, 2019 11:04 am
Forum: Engine Tech
Topic: Gen III Hemi valve spring recommendation
Replies: 6
Views: 317

Re: Gen III Hemi valve spring recommendation

Hyd. Roller....7000 rpm... Oval track. I know the LS guys like PAC... One of my shops sells Kmotion. What do you guys suggest? Gen III Hemi heads have different length valves form the factory depending upon which cylinder head it is. For the longer valve heads we use a PAC-1427 conical spring. I'll...
by Krooser
Tue Sep 03, 2019 7:05 pm
Forum: Engine Tech
Topic: Gen III Hemi valve spring recommendation
Replies: 6
Views: 317

Re: Gen III Hemi valve spring recommendation

Warp Speed wrote:
Tue Sep 03, 2019 2:01 pm
Krooser wrote:
Tue Sep 03, 2019 1:39 pm
Hyd. Roller....7000 rpm... Oval track.

I know the LS guys like PAC... One of my shops sells Kmotion.

What do you guys suggest?
PSI
Looks like the LS 1511 ML would be the one I'd choose.
by Krooser
Tue Sep 03, 2019 1:39 pm
Forum: Engine Tech
Topic: Gen III Hemi valve spring recommendation
Replies: 6
Views: 317

Gen III Hemi valve spring recommendation

Hyd. Roller....7000 rpm... Oval track.

I know the LS guys like PAC... One of my shops sells Kmotion.

What do you guys suggest?
by Krooser
Thu Aug 22, 2019 12:03 am
Forum: Engine Tech
Topic: Something you don't see everyday.
Replies: 21
Views: 1147

Re: Something you don't see everyday.

We had those heads on one of our Holman Moody 427’s in the late 60’s.
by Krooser
Wed Aug 21, 2019 6:25 pm
Forum: Engine Tech
Topic: Bearing clearance question...
Replies: 9
Views: 970

Re: Bearing clearance question...

Geez... now I feel foolish when the new board feature shows the answer to my question right under this post... I had better get with the program! :mrgreen: :mrgreen: :mrgreen:
by Krooser
Wed Aug 21, 2019 6:22 pm
Forum: Engine Tech
Topic: Bearing clearance question...
Replies: 9
Views: 970

Bearing clearance question...

What bearing clearance is acceptable when using a 20w50 racing oil... 800 ppm zddp. Dirt track application.

I'm guessing the old .001 for every inch of journal diameter would be OK.

Your input?
by Krooser
Sat Aug 17, 2019 5:53 am
Forum: Engine Tech
Topic: Cadillac small V-8 engine
Replies: 33
Views: 3402

Re: Cadillac small V-8 engine

The 4.1 holds the dubious title of “Only engine I have ever seen that had a headgasket fail due to rusted out head bolts”..... I appraised a Caddy trade-in that had steam leaking from the head....put it in the air and I found an external head bolt had failed due to road salt. Rusted right thru where...
by Krooser
Sat Aug 17, 2019 2:15 am
Forum: Engine Tech
Topic: Cylinder head flow vs stroke
Replies: 26
Views: 1683

Re: Cylinder head flow vs stroke

Back in the mid-60's it always seemed to me that a 327 Chevy or a 340 Mopar just seemed to have it going on.... a near perfect combination. They just felt "right" on the butt Dyno. Sure there were faster cars with bigger cubes later but my tri-power 389 got beat enough by those two combos to scratch...
by Krooser
Sat Aug 17, 2019 2:07 am
Forum: Engine Tech
Topic: Custom vs Catalog Cams
Replies: 204
Views: 8662

Re: Custom vs Catalog Cams

Talk about old school Herbert sent me a cam without prepaying....I needed it for a Saturday so he just sent along an invoice. Nick Arias sent me an extra piston (gratis) after I broke twice in one season. Got a note (said "you might need another") with the spare I had ordered. Now that kind of servi...