thescrapman Posted December 3, 2014 Share Posted December 3, 2014 I am after tapping the knowledge of the collective.I have acquired an TR engine (thanks Doug :-) )Engine number is CC4477ECross ref thingy says TR250 CD....#% ....CC CC...E CD CDTR6 (carb) CC/CF ....CF CC/CF CD/C/F CDWhich seems to say it is a TR250 engine. Am I right? Don't you just love Triumph for using the same Engine numbers for different models... :-)It has a long back crank. And no block rib under the manifolds, so similar to a Mk1 Pi.What compression would it be? And what cam would it have? Head looks normal, but it might be "high port". Is that easy to spot?I am tempted to clean it up and stick it in my Mk1 if it seems OK, buy me a bit more time to rebuild the original engine. CheersColin Quote Link to comment Share on other sites More sharing options...
TedTaylor Posted December 3, 2014 Share Posted December 3, 2014 Mk1 PI engine number starts CR. This re-use of the C prefix in the TR6 has caught out at least one 'expert' when I was trying to source a replacement crank for the Mk1 PI estate.If it is TR250 with the long back crank it is highly unlikely that it is cross drilled - I have a non cross drilled long back crank from a TR250 in my possession and because of their specification tend to have a softer life than PI engines. MUT Quote Link to comment Share on other sites More sharing options...
thescrapman Posted December 3, 2014 Author Share Posted December 3, 2014 1526 wrote:Mk1 PI engine number starts CR. This re-use of the C prefix in the TR6 has caught out at least one 'expert' when I was trying to source a replacement crank for the Mk1 PI estate.If it is TR250 with the long back crank it is highly unlikely that it is cross drilled - I have a non cross drilled long back crank from a TR250 in my possession and because of their specification tend to have a softer life than PI engines. MUTDefinatelty not cross-drilled, I wouldn't have got it otherwise!Cheers Quote Link to comment Share on other sites More sharing options...
andy thompson Posted December 3, 2014 Share Posted December 3, 2014 Standard cam for TR250 and early federal TR6 was effectively 2500S spec so basically rubbish unless you like a very smooth idle and torque from 500rpm running out of puff at about 4000 Quote Link to comment Share on other sites More sharing options...
thescrapman Posted December 4, 2014 Author Share Posted December 4, 2014 Will see if I can measure what cam is in it.It ended it's previous life in a saloon, as it has a saloon front plate fitted.Apparently it looks very clean inside the sump, so will have a quick nose before sealing it up for temporary storage.The oil from the sump, luckily, is all over the garage it came from, all over Mikes trailer, and on the M25.... :-) Quote Link to comment Share on other sites More sharing options...
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