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Search found 1660 matches

by digger
Wed Feb 08, 2023 2:59 pm
Forum: Engine Tech
Topic: Retorqueing Composite Headgaskets.
Replies: 32
Views: 784

Re: Retorqueing Composite Headgaskets.

dfarr67 wrote: Wed Feb 08, 2023 8:58 am
digger wrote: Wed Feb 08, 2023 5:22 am IMO You dont need a fancy torque wrench for head bolts/ studs
Agreed- but I have to do better than +-10lbs.
Unless you get the crappiest PRC one then you’ll be good
by digger
Wed Feb 08, 2023 5:22 am
Forum: Engine Tech
Topic: Retorqueing Composite Headgaskets.
Replies: 32
Views: 784

Re: Retorqueing Composite Headgaskets.

IMO You dont need a fancy torque wrench for head bolts/ studs
by digger
Tue Feb 07, 2023 4:04 pm
Forum: Engine Tech
Topic: Retorqueing Composite Headgaskets.
Replies: 32
Views: 784

Re: Retorqueing Composite Headgaskets.

composite gasket with stud torqued sub yield always retorque
by digger
Tue Jan 31, 2023 4:04 pm
Forum: Engine Tech
Topic: WPC Treatment or Oil Extreme additive?
Replies: 4
Views: 259

Re: WPC Treatment or Oil Extreme additive?

it will depend what you are trying to achieve
by digger
Tue Jan 31, 2023 4:02 pm
Forum: Engine Tech
Topic: Head Porting for Fuel Milage
Replies: 53
Views: 1788

Re: Head Porting for Fuel Milage

swirl
by digger
Mon Jan 30, 2023 5:15 am
Forum: Engine Tech
Topic: Alternative fuel enrichment
Replies: 36
Views: 1362

Re: Alternative fuel enrichment

Higher octane rating gasoline then the motor needs usually results in a slight drop of horsepower. False. The octane has no impact on power aside from allowing more power if the engine was octane limited previously. Take a 10.5:1 compression 383ci SBC making 450-500 hp NA on premium pump gas. Swap ...
by digger
Tue Jan 24, 2023 1:14 am
Forum: Engine Tech
Topic: SwitchFire X pipe
Replies: 13
Views: 818

Re: SwitchFire X pipe

Looks half as good as a conventional x pipe
by digger
Fri Jan 20, 2023 1:24 am
Forum: Engine Tech
Topic: retarding the cam from 4 degrees to straight up
Replies: 101
Views: 2977

Re: retarding the cam from 4 degrees to straight up

So the crappier the chamber the less it matters?
by digger
Thu Jan 19, 2023 5:11 pm
Forum: Engine Tech
Topic: retarding the cam from 4 degrees to straight up
Replies: 101
Views: 2977

Re: retarding the cam from 4 degrees to straight up

Heads started at 65cc after chamber work and a lite mill when they were new. Compression was 11.5:1. After, I milled them .010. the chambers ended up around 63. I "estimated" that based on .006/cc. No point in wasting time cc'ing them again to know if it was +/- .2 cc different. It's just not that ...
by digger
Thu Jan 19, 2023 3:53 pm
Forum: Engine Tech
Topic: retarding the cam from 4 degrees to straight up
Replies: 101
Views: 2977

Re: retarding the cam from 4 degrees to straight up

Essentially, yes, that's what I am saying. I've done this scenario numerous times over the year. Build engine, max compression pump gas for example. Engine gets run for years. Comes back for freshen up. Hone, re ring, bearings, etc. Say for example, a 406. 11.5:1 with flat tops, and 64cc. Mill head...
by digger
Tue Jan 17, 2023 5:20 pm
Forum: Engine Tech
Topic: Comp Cams passes off 50 year old technology, as "New" cutting edge tech.
Replies: 49
Views: 3274

Re: Comp Cams passes off 50 year old technology, as "New" cutting edge tech.

One thing Comp has, is a serious advertising budget. In 2006, HOTROD magazine did a multi page article on my cam balancing system. Before it went to print, Someone high up at Comp Cams heard about it and called HOTROD's publisher. They threatened to pull their advertising, and it almost got the wri...
by digger
Mon Jan 16, 2023 6:21 pm
Forum: Engine Tech
Topic: retarding the cam from 4 degrees to straight up
Replies: 101
Views: 2977

Re: retarding the cam from 4 degrees to straight up

rfoll wrote: Mon Jan 16, 2023 5:04 pm For the discussion at hand it's a matter of how much is enough. The original question was about retarding the cam 4 degrees. It took 3 days and 2 pages to get an answer.
What was the answer? :lol:
by digger
Sun Jan 15, 2023 9:00 pm
Forum: Engine Tech
Topic: retarding the cam from 4 degrees to straight up
Replies: 101
Views: 2977

Re: retarding the cam from 4 degrees to straight up

Debate all you want, I told you what to do. It'll work. I've done it 50 times since the mid 90's. But listen to guys with "opinions ". Good luck, hope it works out for you. 👍. Quench works the opposite of what everyone on here thinks. Making it "tighter" isn't better or more "efficient" because it ...
by digger
Thu Jan 12, 2023 5:27 pm
Forum: Engine Tech
Topic: Rod bolt tightening
Replies: 37
Views: 1833

Re: Rod bolt tightening

Every ARP rod bolt set I’ve seen includes the torque values to be used when a stretch gauge is not available. If this was not an acceptable method ARP would not include this. The ARP main stud and head studs commonly use a torque value, again if ARP felt that it was mandatory to use an angle tighten...
by digger
Wed Jan 04, 2023 10:58 pm
Forum: Engine Tech
Topic: Rod bolt tightening
Replies: 37
Views: 1833

Re: Rod bolt tightening

Bolt tensioning using torque is almost useless. Unless the components have been tested and verified regarding tensile,lubrication, and friction. Almost never possible with aftermarket components. Angle torque or stretch are the only methods that should be considered in critical areas such as an eng...