Lister Posted April 19, 2006 Share Posted April 19, 2006 A question for the sprint guru's. Can a sprint be run on unleaded petrol or do the valve seats need to be replaced. Getting engine ready for overhauling.Al Link to comment Share on other sites More sharing options...
Beans Posted April 19, 2006 Share Posted April 19, 2006 Don't bother with (extra) hardened valve seats the originals are fine.'t Kreng is running on the original seats and on unleaded (without lead substitute) since '97. No problems till this date.OK it has stainless steel valves but that shouldn't make any difference.It even ran on 95 octane during the 10CR without any problems, still amazes me Link to comment Share on other sites More sharing options...
Lister Posted April 19, 2006 Author Share Posted April 19, 2006 cheers Beans.got three of the suckers so want to try to get the later model fixed up after a dummy fitting session.Is there such a thing as an extra thick head gasket ? so for all the questions butreally used to working on MGs so thriumph knowledge a little thin.Cheers again AL :) Link to comment Share on other sites More sharing options...
Beans Posted April 19, 2006 Share Posted April 19, 2006 Is there a reason to fit a thicker haedgasket ????As far as I know did Leyland only sell the headgaskets in one thickness.The usual TR7 specialists can probably provide extra thick ones Link to comment Share on other sites More sharing options...
Lister Posted April 19, 2006 Author Share Posted April 19, 2006 just really as im using bits from three engines to make one, the pistons may be too near the valves etc so may use a thicker gasket to raise them a little .got new valves but unsure as to what the existing valves are like until i've pulled it apart Link to comment Share on other sites More sharing options...
Ally_H Posted April 20, 2006 Share Posted April 20, 2006 HiyaYou probably know this already, but just in case - when you're sorting out your TR7 engine it would be a good idea to get the head checked for flatness before refitting it as they have a tendency to warp. You can indeed get extra thick head gaskets, I know S&S do them and I think a lot of other suppliers do too. Good luck!Ally Link to comment Share on other sites More sharing options...
Beans Posted April 20, 2006 Share Posted April 20, 2006 [quote by=Spitfireally link=Blah.pl?b=tr78,m=1145466103,s=5 date=1145528631] ... it would be a good idea to get the head checked for flatness before refitting it as they have a tendency to warp ... [/quote]Hmmm ... sounds more or less familiar ;D Link to comment Share on other sites More sharing options...
Ally_H Posted April 20, 2006 Share Posted April 20, 2006 Hehe... I am rather used to weird head gasket issues! Wouldn't want anyone else to suffer :(Ally Link to comment Share on other sites More sharing options...
Lister Posted April 20, 2006 Author Share Posted April 20, 2006 thanks very much guys .. i think the head is flat at least looks pretty much so when i measure it.will get it checked whilst its at the cleaners. hopefully getting rid of all the scrappy paint from the head and block - will paint it black then ( i think ) AL Link to comment Share on other sites More sharing options...
Beans Posted April 20, 2006 Share Posted April 20, 2006 [quote by=Spitfireally link=Blah.pl?b=tr78,m=1145466103,s=7 date=1145537481]... I am rather used to weird head gasket issues![/quote]You are learning fast I see ;DBut this is what I meant with my remark Sorry , link no longer available3 rd reply :P Link to comment Share on other sites More sharing options...
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