Stock Eliminator secrets?
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Re: Stock Eliminator secrets?
Possibly related to Stock and Super Stock engines, the LS engines have a trick for increasing the preload on the lifters with longer pushrods. It supposedly makes the lifter act like a short travel lifter, increasing stiffness of the valvetrain and making slightly more power. Is this a trick that could apply to older hydraulic lifter engines as well?
Re: Stock Eliminator secrets?
Very smart man, Calvin. Spoke to him yesterday about our new engine package. He is doing our NMRA Coyote Stock headers in a few weeks. Getting the new ECU wired up at Racewires in PA but as soon as Troy is done, she's getting her new pipes and track testing!tenxal wrote: ↑Fri Oct 09, 2020 9:21 am A big part of my program has been the Elston 4-2-1 headers. We were testing headers and had four sets on the engine during one dyno session. What we saw with the Elston's led me to further conversation with Calvin and further gains both on the dyno and at the track. Where we ended up is about 180 degrees from how most approach things with a 305 or 350 Stocker engine, but it's worked well.
You have to have a good short block with minimal rotating drag, good heads and intake. Given that, I can't imagine doing another Stocker without starting with a set of Calvin's 4-2-1's and working backwards....starting at the collector and ending up at the cam.
On the dyno, we test the headers as they are run on the car.
"Quality" is like buying oats. You can pay a fair price for it and get some good quality oats,
or you can get it a hell of a lot cheaper, when it's already been through the horse.
Nil Satis Nisi Optimum
Ed Curtis - www.FlowTechInduction.com
or you can get it a hell of a lot cheaper, when it's already been through the horse.
Nil Satis Nisi Optimum
Ed Curtis - www.FlowTechInduction.com
Re: Stock Eliminator secrets?
RDY4 how much more preload are you talking about. On a LS .025 longer push rod is about a half turn. Are you talking about 1 or 2 turns on the rocker adjustment.
Re: Stock Eliminator secrets?
This is a better solution for several reasons. Danny Ashley is a smart, smart guy on QJets. It's a shame he doesn't do them anymore. His QJets are in high demand and rarely become available. I'm fortunate to have one of his plus several others to work with and learn from.maxracesoftware wrote: ↑Fri Oct 02, 2020 2:53 pmi guess you tried black electrical tape mod on the QJet rear metering rod holes ?
Re: Stock Eliminator secrets?
NHRA now lets the hydraulic lifter engines run solid lifters in Stockers.RDY4WAR wrote: ↑Fri Oct 09, 2020 1:40 pmPossibly related to Stock and Super Stock engines, the LS engines have a trick for increasing the preload on the lifters with longer pushrods. It supposedly makes the lifter act like a short travel lifter, increasing stiffness of the valvetrain and making slightly more power. Is this a trick that could apply to older hydraulic lifter engines as well?
Re: Stock Eliminator secrets?
With the NHRA mandated stock ring groove widths (5/64, 5/64", 3/16" in my case), break-away torque is 11-12 lbs./ft. with a constant rotational of 8 lbs./ft.
That's the complete short block...fresh hone, crank installed/torqued, all 8 rods installed/torqued, all 8 pistons with the full ring packs, rear main seal, crank gear, cam gear and timing chain.
Thanks for the compliment.
Re: Stock Eliminator secrets?
I thought it would be less, but I guess with the fat rings it won't get much better. About the same as my 421 with skinny rings.tenxal wrote: ↑Wed Oct 14, 2020 8:01 amWith the NHRA mandated stock ring groove widths (5/64, 5/64", 3/16" in my case), break-away torque is 11-12 lbs./ft. with a constant rotational of 8 lbs./ft.
That's the complete short block...fresh hone, crank installed/torqued, all 8 rods installed/torqued, all 8 pistons with the full ring packs, rear main seal, crank gear, cam gear and timing chain.
Jim
Re: Stock Eliminator secrets?
I buzzed through the 12 pages of this thread on stock eliminator secrets, anybody mention ring spacers?
https://dragracingonline.com/archive/te ... %26hl%3Den
https://dragracingonline.com/archive/te ... %26hl%3Den
Re: Stock Eliminator secrets?
WOW close to 15000.00 in headers that is more than I have spent on my whole car and it runs over a second under the index and that’s with a standard set of 2 inch hooker headers with a merge collector.WOW ain’t that something.
Re: Stock Eliminator secrets?
Really?77cruiser wrote: ↑Wed Oct 14, 2020 8:50 amI thought it would be less, but I guess with the fat rings it won't get much better. About the same as my 421 with skinny rings.tenxal wrote: ↑Wed Oct 14, 2020 8:01 amWith the NHRA mandated stock ring groove widths (5/64, 5/64", 3/16" in my case), break-away torque is 11-12 lbs./ft. with a constant rotational of 8 lbs./ft.
That's the complete short block...fresh hone, crank installed/torqued, all 8 rods installed/torqued, all 8 pistons with the full ring packs, rear main seal, crank gear, cam gear and timing chain.
THE lowest I’ve ever heard on a SBC (8 cylinder of course) was 7 lbs/ft of rotating torque... 1 lbs/ft difference could be error.
THE lowest I’ve ever witnessed was 11-12ish rotating and I’ve been fortunate enough to have been around a lot of very sharp and competent builders/racers.
Re: Stock Eliminator secrets?
...And why do you suppose that is...?
Here’s a hint... in question form.
How many more cars would you guess have competed in the 275HP 327 class in the past 50 years than the class your car competes in...?
Re: Stock Eliminator secrets?
so the stock ring grooves are mandated, but does that mean you cant run a thinner ring with a spacer under it?tenxal wrote: ↑Wed Oct 14, 2020 8:01 amWith the NHRA mandated stock ring groove widths (5/64, 5/64", 3/16" in my case), break-away torque is 11-12 lbs./ft. with a constant rotational of 8 lbs./ft.
That's the complete short block...fresh hone, crank installed/torqued, all 8 rods installed/torqued, all 8 pistons with the full ring packs, rear main seal, crank gear, cam gear and timing chain.
Thanks for the compliment.
Re: Stock Eliminator secrets?
I’m not really trying to be a smart azz are anything but that is a chuck of doe for a class that only pays 1200.00 to win if that and hardly any contingency.If I spent that kind of scratch I would be 2 seconds plus under if not more.
- nhrastocker
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Re: Stock Eliminator secrets?
Yes, you can run spacers with a thin ring.lefty o wrote: ↑Wed Oct 14, 2020 12:44 pmso the stock ring grooves are mandated, but does that mean you cant run a thinner ring with a spacer under it?tenxal wrote: ↑Wed Oct 14, 2020 8:01 amWith the NHRA mandated stock ring groove widths (5/64, 5/64", 3/16" in my case), break-away torque is 11-12 lbs./ft. with a constant rotational of 8 lbs./ft.
That's the complete short block...fresh hone, crank installed/torqued, all 8 rods installed/torqued, all 8 pistons with the full ring packs, rear main seal, crank gear, cam gear and timing chain.
Thanks for the compliment.
Re: Stock Eliminator secrets?
[/quote]
so the stock ring grooves are mandated, but does that mean you cant run a thinner ring with a spacer under it?
[/quote]
lefty o, you can run a thinner ring, however, the ring groove spacer goes on the top side of the ring groove.
so the stock ring grooves are mandated, but does that mean you cant run a thinner ring with a spacer under it?
[/quote]
lefty o, you can run a thinner ring, however, the ring groove spacer goes on the top side of the ring groove.