aaron77 Posted April 11, 2006 Share Posted April 11, 2006 Hey,Im looking at fitting my '77 2500Tc with a 2000MkII head to raise the compression.Would this fit and what else should i look out for?Cheers Link to comment Share on other sites More sharing options...
Deleted User Posted April 11, 2006 Share Posted April 11, 2006 First ... most 2000 heads are very similar to 2500 heads as 2000's ran a domed piston from 1972Second .. if you did find an early 2000 head with the much smaller combustion chamber you will end up with about 11.5 :1 compression and you will break all your pistons PINK PINK PINK Link to comment Share on other sites More sharing options...
aaron77 Posted April 11, 2006 Author Share Posted April 11, 2006 oh real?ok then, what can i do to get the high compression without shreding my pistons? Link to comment Share on other sites More sharing options...
Deleted User Posted April 11, 2006 Share Posted April 11, 2006 What do you want to achieve? More power obviously.... you need a decent cam.. not too crazy.. about 285 duration (Wade 444C is good) and a head skim of about 80 thou to give you 9.5:1 compression... even then you will need premium fuel to stop the pinking... Link to comment Share on other sites More sharing options...
aaron77 Posted April 11, 2006 Author Share Posted April 11, 2006 sounds like a plan! im not too hot on the whole cam thing but iv heard something about pushrods on these engines or something not sure please explain, cheers Link to comment Share on other sites More sharing options...
Jason Posted April 12, 2006 Share Posted April 12, 2006 Aaron - "tell me about tuning" is a little too vague for a decent answer :-) Suggest you do a little research/education first with a broad theory read - anyone suggest a good general article to start with? I had in mind a great web page set all about how to built a Spitfire performance engine (we're looking at principles now so it doesn't really mater what engine).I cut my teeth on David Vizard's "How to modify your Mini" and "Tining A series Engines" but there are others - just choose a good old skool OHV engine and the principles are the same :-) Link to comment Share on other sites More sharing options...
Richard B Posted April 12, 2006 Share Posted April 12, 2006 I always thought "4 Stroke Performance Tuning" was a good start, by A Graham Bell ISBN 85429 275 6. For the Triumphs in particular Gareth Thomas tuning book is quite interesting. Link to comment Share on other sites More sharing options...
Tim Bancroft Posted April 12, 2006 Share Posted April 12, 2006 Gareth Thomas's Tuning Manual- is as rare as hen's teeth- I have a copy- maybe an idea to put it on the net at some point.- it is not copyrighted and is Mr Thomas still around?Might be an idea to read up on one of Dave Vizard's books? Link to comment Share on other sites More sharing options...
Toddski Posted April 13, 2006 Share Posted April 13, 2006 Hi Tim,Gareth is still around - he got in contact with me last year through my website. He now runs a tuning company for Aston Martin's and Jags and still has some Triumph bits around. Think he races a Jag XJS.I asked about his book - he doesn't have a copy himself as his lawyer has it as part of a copyright infringement case. ;)He did mention if he could get the clubs interested he'd possibly look at republishing it.Not sure if he'd reply to emails from me now though - I was going to import a diff from him but when I found out how much it was going to cost to get it past customs (he had given me a quote on shipping but it was only to a Customs clearance house) I pulled the pin on the deal - don't think he was overly amused.Cheers,Todd Link to comment Share on other sites More sharing options...
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