400se piston rings

[barrington]

were or who can i get 400se piston rings from

[TVRleigh_BBWR]

I would have thought they are standard 94mm rings.
So any of the regular suppliers

If you want to measure them I can compare them to my new standard 4.0 / 4.6 ones. (waiting to be fitted)

Edited by TVRleigh_BBWR on Friday 17th September 10:06

[barrington]

tried all the normal tvr people like tvr power rt racing rpi no luck the engine builder has found a company but they are going to cost about £250

[Desiato]

barrington said:

were or who can i get 400se piston rings from

Are they not just a standard Cosworth/Omega (insert make of piston) piston ring, most engine shops should be able to supply them off the shelf?

[Number 7]

TVRcarparts? Surely someone like John Eales or V8 Developments would have them, or know where to source them?

7.

[clive f]

try these guys, very knowledgable and helpful and at a fraction of the cost of tvr rings, I got a set for my ajp for £150 delivered last year.

http://www.performanceunlimited.co.uk/Total%20Seal...

[barrington]

cheers chaps i will try these out the builder has spoken to cosworth and they may have some will check with them on monday but they said they were made tvr only

[Wedg1e]

TVRleigh_BBWR said:

I would have thought they are standard 94mm rings.
So any of the regular suppliers

I'd go with this. The 390 was 93.5mm bore; when Rover introduced the 4L engine they went out another 20 thou to 94mm. Allegedly ( ) depending on when a 400SE was built, there was more standard Rover in there and less NCK magic. The 400SE's I've seen in bits appear to have the same pistons as my car - ie 94mm with a slight dish (like mine, some have valve pockets too). A 400SE with no valve pockets would likely be a bog-stock Rover motor IMHO, so standard 94mm rings would be the way to go.

[TVRleigh_BBWR]

Wedg1e said:

TVRleigh_BBWR said:

I would have thought they are standard 94mm rings.
So any of the regular suppliers

I'd go with this. The 390 was 93.5mm bore; when Rover introduced the 4L engine they went out another 20 thou to 94mm. Allegedly ( ) depending on when a 400SE was built, there was more standard Rover in there and less NCK magic. The 400SE's I've seen in bits appear to have the same pistons as my car - ie 94mm with a slight dish (like mine, some have valve pockets too). A 400SE with no valve pockets would likely be a bog-stock Rover motor IMHO, so standard 94mm rings would be the way to go.

AFAIK he got the flat top Cosworth pistons, same as I have in my 400SE, I never changed the rings on mine though, as I did not have this block honed.
I've given him a old set of LR 4.0 rings for him to compare to his, so fingers crossed.
Else it could get complex once, more of our engines start to get older and need work, saying that if you have too much wear your going to need, new over size pistons and rings, unless you get new liners.

[barrington]

hi leigh cheers for the old rings not the same the ones on mine are thicker so will have to wait till monday and see what we find

[barrington]

were getting there engine builder spoke to cosworth going by the code on the pistons they are race pistons they supplied these to nck but without rings .after about 30 phone calls we have found some just got to find oil rings now so fingers crossed next week the rebuild will start

[TVRleigh_BBWR]

barrington said:

were getting there engine builder spoke to cosworth going by the code on the pistons they are race pistons they supplied these to nck but without rings .after about 30 phone calls we have found some just got to find oil rings now so fingers crossed next week the rebuild will start

Sound a bit of a nightmare, do they have any more, as maybe handy to keep some just in-case.

[andymadmak]

when I rebuilt my 400se engine I got some VERY nice rings from the USA (BUICK type) which were gapless - improved compression and reduced blow past. made a difference I am sure..

Andy

[barrington]

once we have found all the rings i will see if we can get any more

[Campbell]

You know that there is 1 ring to rule all rings...

When i rebuild the engine in the seac i called john e engineering as the pistons in my engine are omega forged and the rings are racing type.
Je engineering is the place to go.

Cambelt

[barrington]

rings on order coming from america (BUICK)

[Boosted LS1]

You just have to establish the diameter and thickness. None of this cosworth mystery racing ring nonsense.

[barrington]

just a quick update rings are not a from buick it has taken hundreds of phone calls from ian at spec engines but now we are there he has found a company in germany that makes piston ring they have a match for the compretion rings both are 94 1.5 and they are making the 3 piece oil rings hope to have the engine back next month to refit

Edited by barrington on Friday 25th March 21:17

[Boosted LS1]

Heck, all this time? If you'd sent me the rings it could have been specced in a week unless they're amazingly unique? Which they won't be. Still, at least you should have them soon which is good.

[barrington]

hope they come this time if not will be giving you a call. first time i have seen your web site wish i had seen this when we started to look for the rings