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Search found 495 matches

by Coloradoracer
Sat Feb 22, 2020 8:15 pm
Forum: Engine Tech
Topic: Red Top Battery Life?
Replies: 15
Views: 367

Re: Red Top Battery Life?

If you kill your agm optima all you have to do to bring them back to life is take a fully charged lead acetate battery hook up a wire from the positive post on the lead battery to the optima positive and then do same with another wire to the negative hook up your battery charger to the lead acetate...
by Coloradoracer
Sat Feb 22, 2020 6:30 pm
Forum: Engine Tech
Topic: Which lifter would you use?
Replies: 14
Views: 723

Re: Which lifter would you use?

True, but that's not his question. :wink: I kinda did answer the question in an off the cuff kind of way....I wouldn't even waste the money on the flat tappets at all....but for what he's gonna do I'd get the cheapest ones I could. :mrgreen: :mrgreen: Other option is get the engine done the way you...
by Coloradoracer
Sat Feb 22, 2020 6:27 pm
Forum: Engine Tech
Topic: Red Top Battery Life?
Replies: 15
Views: 367

Re: Red Top Battery Life?

The new Optima batteries are NOTHING like the originals. I've got a red and a yellow top. Both are disappointments. I only use the redtop for my tongue jack on the trailer and it's done after about two or three lifts. The yellow top is in the trailer for the winch. Same deal, two or three easy pulls...
by Coloradoracer
Sat Feb 22, 2020 8:20 am
Forum: Engine Tech
Topic: Which lifter would you use?
Replies: 14
Views: 723

Re: Which lifter would you use?

Honestly, unless it's a rules required build that dictates flat tappets, I wouldn't run anything other than a roller cam, solid or hydraulic....
by Coloradoracer
Fri Feb 14, 2020 9:18 am
Forum: Engine Tech
Topic: belt drives
Replies: 6
Views: 3401

Re: belt drives

pdq67 wrote:
Thu Feb 13, 2020 7:14 pm
I know, A VERY OLD THREAD!!

Do people still drill little holes in the belt pulley cog valleys to let the air out from between the belt and pulleys at speed to help here??

pdq67
Not sure why they would do this as there is no benefit......other than putting holes in the pulley!
by Coloradoracer
Sun Feb 09, 2020 11:08 pm
Forum: Chassis / Suspension / Body
Topic: Help me understand Hydroboost/brake issue
Replies: 6
Views: 175

Re: Help me understand Hydroboost/brake issue

Piston seals on the boost unit failed. Seen it before many times
by Coloradoracer
Sun Feb 09, 2020 11:04 pm
Forum: Engine Tech
Topic: Piston Question
Replies: 10
Views: 695

Re: Piston Question

bigfoot wrote:
Sun Feb 09, 2020 5:07 pm
Who.makes custom pistons for a ford ?
More like who doesn't. Pretty much any piston manufacturer that does custom pistons can.
by Coloradoracer
Sat Feb 08, 2020 6:39 pm
Forum: Engine Tech
Topic: SBF dry sump question
Replies: 6
Views: 243

Re: SBF dry sump question

I'm running a chevy, and I have the supply hose going into an adapter at the oil filter location. I use an inline oil filter just before that. I don't know how the ford oils the mains, but my block is a priority main block, and it's easiest to feed it from the factory location in my opinion. it oils...
by Coloradoracer
Sat Feb 08, 2020 12:06 pm
Forum: Engine Tech
Topic: 750 holley dominator
Replies: 21
Views: 863

Re: 750 holley dominator

No support any longer for the Demon carbs, but you can get rebuild kits for them. Not many builders will touch them anymore. The size of the carb has less to do with the response than the calibration. You can have excellent throttle response with a large carb on a small engine. It's all in the tuning.
by Coloradoracer
Mon Jan 20, 2020 8:48 pm
Forum: Engine Tech
Topic: 1400 hp Big Chevy combinations
Replies: 91
Views: 2951

Re: 1400 hp Big Chevy combinations

mt-engines wrote:
Sat Jan 18, 2020 12:44 pm
What's the altitude? That's like a 400hp correction for the amount of fuel you used.
Dyno was at 7200ft. DA was right around 8000 IIRC
by Coloradoracer
Sat Jan 18, 2020 10:34 am
Forum: Engine Tech
Topic: 1400 hp Big Chevy combinations
Replies: 91
Views: 2951

Re: 1400 hp Big Chevy combinations

Forgot to mention....those numbers on mine are WITHOUT nitrous....
by Coloradoracer
Sat Jan 18, 2020 8:53 am
Forum: Engine Tech
Topic: 1400 hp Big Chevy combinations
Replies: 91
Views: 2951

Re: 1400 hp Big Chevy combinations

Craig J wrote:
Fri Jan 17, 2020 1:55 pm
mt-engines wrote:
Fri Jan 17, 2020 1:17 pm
...then another 6k on the induction...
actually $300 for this.

Image

That will need A LOT of work to get you there....even supercharged/turbocharged......Here's mine for reference:
by Coloradoracer
Sat Jan 18, 2020 8:47 am
Forum: Engine Tech
Topic: King versus clevite
Replies: 29
Views: 1673

Re: King versus clevite

I ran the King HP series bearings in my last two builds with zero sizing issues, but always had glitter in my oil. Switched to a set of their XP series rod bearings on a freshen because I had them, three runs later I kicked two rods out of my block. Had 80lbs of oil pressure the whole time so not su...
by Coloradoracer
Mon Jan 13, 2020 8:40 pm
Forum: Engine Tech
Topic: 1400 hp Big Chevy combinations
Replies: 91
Views: 2951

Re: 1400 hp Big Chevy combinations

I have more than $6000 in just my intake!
by Coloradoracer
Sun Jan 12, 2020 9:57 pm
Forum: Engine Tech
Topic: Flexplate gap bbc
Replies: 12
Views: 454

Re: Flexplate gap bbc

SFI flexplate is thicker than stock. That explains the difference. DO NOT shim the converter away from it. You need that room to prevent the converter from bottoming out in the pump. You can have the pads machined down on the converter for additional clearance if you need it. SFI flexplate won't fle...