track day risk to oil pressure
Discussion
Yes.
You posted the spec of your engine as if to imply that it was not as powerful as some but that is not the issue. Your Ultima will brake and corner as hard as any and it is these G forces that will produce oil surge and starvation.
An Ultima holds the world record for lateral G using probably the same tyres etc. as your car so yours could do the same.
Steve
You posted the spec of your engine as if to imply that it was not as powerful as some but that is not the issue. Your Ultima will brake and corner as hard as any and it is these G forces that will produce oil surge and starvation.
An Ultima holds the world record for lateral G using probably the same tyres etc. as your car so yours could do the same.
Steve
menostig said:
thank you, I'm convinced. I'm adding the oil-cooler this winter, I assume I can T in the accusump anywhere between the oil-filter sandwich plate take-off and the temperature stat before the cooler.
cheers
Roger.
I think it goes in the return line, which is logical, but without a non return valve I suppose it makes no difference.
Steve
Absolutely, it does not matter as the oil pump will act as a one way valve.
One thing you may want to consider is do you want to filter the oil first (as suggested by Accusump) or not as seems to be the norm on our cars. I ran with unfiltered oil for a year and last winter I added a remote oil filter so I could feed the Accusump with filtered oil. This is meant to protect/prolong the internals of the cylinder.
One thing you may want to consider is do you want to filter the oil first (as suggested by Accusump) or not as seems to be the norm on our cars. I ran with unfiltered oil for a year and last winter I added a remote oil filter so I could feed the Accusump with filtered oil. This is meant to protect/prolong the internals of the cylinder.
Ime sure an accusump will sort your problem out for short periods only. But on a long fast corner it may not last the time.
A much simpler and less cost effective method is a baffled sump. ive run a ZZ4 355 and 385 for collectively 12k mostly on the circuit with one.
you can buy a baffled sump and pickup from moroso try, summit racing, or buy a U WELD IT kit from Real Steel for half the price, thtas what ive got.
Whatever wish you luck with the solution DP
A much simpler and less cost effective method is a baffled sump. ive run a ZZ4 355 and 385 for collectively 12k mostly on the circuit with one.
you can buy a baffled sump and pickup from moroso try, summit racing, or buy a U WELD IT kit from Real Steel for half the price, thtas what ive got.
Whatever wish you luck with the solution DP
Hi DoublePumper,
My thread on sumps had run dry, if you'll excuse the bad pun, so it was great to see your post. Excellent I will try that. So it's just order a baffled sump and matching pickup for a ZZ4 (and a new gasket ??) and then fit. What's the catch, tell me this can be done with the engine in-situ on a Sport ?
cheers
Roger.
My thread on sumps had run dry, if you'll excuse the bad pun, so it was great to see your post. Excellent I will try that. So it's just order a baffled sump and matching pickup for a ZZ4 (and a new gasket ??) and then fit. What's the catch, tell me this can be done with the engine in-situ on a Sport ?
cheers
Roger.
I think there are lots of valid points with regard to using either accusump or dry sumup, but in support of Double Pumper's statement it's very true.
Graham and I have attend probably ten track days a year which includes "Spa" and Graham's engine has never had oiling problems, although first hand knowledge of other baffled sump Chevy's have resulted in major failure's. ( Mark & Glyn spring to mind, although Glyn's was more spectactuler!)
Graham and I have attend probably ten track days a year which includes "Spa" and Graham's engine has never had oiling problems, although first hand knowledge of other baffled sump Chevy's have resulted in major failure's. ( Mark & Glyn spring to mind, although Glyn's was more spectactuler!)
These Ultima engines are not cheap. The LS7 going in my GTR is a dry-sump engine from the factory. You can bet it will also get a small Accusump.
No dry-sump? It's probably $3k-$4k to add one (a four-stage, tank, new pan, lines and fittings, pulley and belt).
What is it, $600 for the complete 2Qt setup with a pressure-sensing electric valve? Maybe $100 more for the 3Qt? That seems like cheap insurance.
-- Scott
No dry-sump? It's probably $3k-$4k to add one (a four-stage, tank, new pan, lines and fittings, pulley and belt).
What is it, $600 for the complete 2Qt setup with a pressure-sensing electric valve? Maybe $100 more for the 3Qt? That seems like cheap insurance.
-- Scott
Ime sure we are all right in one way or another on this one. The baffled sump has proved bomb proof for me. Maybe others have had failures of oil pumps, drives. pickups dropping off, there could be a host of reasons. Any way i dont believe that an ACCu should be used on its own cos it only provides oil for a few secs at best.
You have to remove the engine to do the mods and if you want the name of abloke to mod the sump i will let you have one.
If you buy a new sump from Moroso or another then make sure its for track use and not oval racing like the one i got first time
DP
You have to remove the engine to do the mods and if you want the name of abloke to mod the sump i will let you have one.
If you buy a new sump from Moroso or another then make sure its for track use and not oval racing like the one i got first time
DP
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