Time between engine rebuilds for HP

[BruceG]

Bruce, Are you buying another car? I have a real nice RX7 if you're interested

I didn't see you on the car counts for 4/10-4/11, the STO car not ready net?

Just looking at classes where I don't have to race with the fast ones like you, my friend!! Seriously, I was curious as to engine life in some of the older tech cars of the HP ilk.

[quadzjr]

Just looking at classes where I don't have to race with the fast ones like you, my friend!! Seriously, I was curious as to engine life in some of the older tech cars of the HP ilk.

as a more specific answer to teh older cars, they are just like anything else. A top flight prod motor life span is very small. However they are not built for reliability. I know a good bit of the run-off guys put new motor for both prodfest and Run-offs.

However a mildly built one should last you all season without issue.

[rsportvolvo]

I would start by logging run time and oil pressure. Then perform regular compression and leak down tests? If they all check out ok then keep running the engine. Also, depending on the power being made that could be an additional factor to keep track of. So adding periodical dyno runs would help correlate the compression test, leak down test and oil pressure figures to rebuild intervals. Just thinking out loud here.

[BruceG]

I would start by logging run time and oil pressure. Then perform regular compression and leak down tests? If they all check out ok then keep running the engine. Also, depending on the power being made that could be an additional factor to keep track of. So adding periodical dyno runs would help correlate the compression test, leak down test and oil pressure figures to rebuild intervals. Just thinking out loud here.

Thanks for your help folks.....I guess the question is with similar time racing to a spec pinata is engine life in these prod cars a lot shorter or similar?

[lateapex911]

A British Prod car compared to a Spec Miata!?!?!?!?!?

Think about it like this: A mosquito vs a tortoise.

[BruceG]

A British Prod car compared to a Spec Miata!?!?!?!?!?

Think about it like this: A mosquito vs a tortoise.

No question there, Jake. I agree completely, no comparison speedwise. I was curious because you see some HP car engine rebuids using Carillo rods and Mahle pistons which gets pretty pricey.

[JLawton]

No question there, Jake. I agree completely, no comparison speedwise. I was curious because you see some HP car engine rebuids using Carillo rods and Mahle pistons which gets pretty pricey.

I'm not so sure Jake meant speed in his analogy. I think he was trying to say they are at opposite ends of the spectrum. One needs a CRAP load to maintain, the other needs very little.

[quadzjr]

Thanks for your help folks.....I guess the question is with similar time racing to a spec pinata is engine life in these prod cars a lot shorter or similar?

It is considerably shorter.