Correct size piston rings

[DaveG]

I am having big problems finding rings that will fit my Griff 500 (95). It is std size bore and I have tried Hastings rings for Rover/(TVR) 4.0/4.6, however when I gap them they are .030 ins which is too large (should be approx .015 ins). Have been trying to get an alternative for last 6 weeks, but no luck. I have now ordered rings .020 ins oversize (can't get .010 ins ) and I am hoping to file down to fit?? (last resort).
Has antybody had simial problems or can offer any advise - must get this engine rebuilt, but with the correct ring gap!
(The bore has been honed but is standard 94mm.)

[Johno]

TVR Power

Castle Race Engines

V8 Developments

I imagin any of the above would be able to help . . .

[Boosted LS1]

Go for file fits. Have you looked on the Totalseal website?

Boosted.

[CRE]

Have you actually bought the 4.0/4.6 rings? They are not the correct rings and will not fit the piston, I would suggest that you dont use them!
The rings that are used as std from Tvr are from the 3.9 engine, although the very early (and I mean early) 500 engines used a modified LR 4.2 piston.
HTH

[DaveG]

Thanks for the suggestions everyone. CRE - yes I have sourced the 4.0/4.6 rings, but not yet paid until I find a better fit, are you sure the 3.9 rings are the ones?.
I have now posted a couple of emails to the "specialists" suggested by Johno. I am hoping some further information will clarify if they are R/Rover rings and if so which model, or whether they are TVR specials, in which case what spec.
I should probably have sourced from UK directly in the first place, but its a long way away when things go wrong - probably short sighted on my part. If anything unusual eventuates I will post as it has become a real pain holding up my rebuild since January.

[CRE]

Hi dave,

YHM

Hopefully it will help answer some questions!