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Triumph 1500 to 1700 stroker?

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openfold Oli Penfold
Fareham, Hampshire, UK   GBR
Thanks for all the help guys, I think I'm gonna stick with the stock stroke for now and bore it 40 thou over. later on if I want to go faster I can turbo it maybe tongue sticking out smiley haha. I like the 6000 redline and the sporty lively feeling of it so the 1700 might not be for me

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spitfire50 Paul Mugford
Rochester, N.H., USA   USA
Oli,
If you think the 1500 is lively don't ever drive a small crank 1296. A 1500 will never satisfy you again.
All the best,
Paul

GeorgeOhr Nonya Business
Yes, confused, USA   USA
Hey Hap, how much to grind a crank like that and is there any way to lighten/knife edge it to loose some weight?

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clshore Carter Shore
Beverly Hills, FL, USA   USA
Three different 3 main bearing crankshafts:

Spitfire 1147 crankshaft:
https://rimmerbros.com/Item--i-305073R

Spitfire 1500 crankshaft:
http://www.2040-parts.com/_content/items/images/22/1680722/001.jpg

Coventry Climax crankshaft:
http://shop.arrowprecision.com/crankshafts/coventry-climax-fwb.html

Note the differences in the segments connecting conrod journals 1-2 and 3-4.
The Climax crank is likely the lightest and best performing of the three.



Edited 1 time(s). Last edit at 2017-12-27 08:41 PM by clshore.

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1976 Triumph Spitfire 1500

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