Chris
Your 2.2 would be a good start point for a short stroke 2.5 like the STs ran around 72 so still period correct. The 2.2s ran a 66mm crank which was the shortest stroke used (same as 2.0). The Ts did have non-counterweighted cranks but this isn't an issue unless you want to regularly rev it over 7500rpm. Fit some bigger cylinders and higher compression pistons, some later heads (cheap) which gives you bigger valves and ports, some S cams and rebuild/rejet the carbs. 72Ts ran carbs and so did early STs so I don't see much point is looking at MFi stuff. Fairly easy to get over 200hp with this combo.
The rebuild costs are much the same regardless of size and compression etc so you just need to decide what you want before you sell a good core. The cases and crank are the key starters, the rest just bolts on. You will most likely need new pistons and cylinders with any rebuild and size/compression doesn't really change the cost. There is limit with case size as to how big you can go and some bigger sizes will require some machining of the cases.
Selling yours and buying a 2.4T engine and upgrading it to RS spec with carbs is also a good option if you can locate a good 2.4. Another easy 200+hp engine. The 2.4s and 2.7s used a slightly longer stroke which gives a bit more torque but doesn't rev as well as short stroke. Just a different character. John F has this combo but I think he started with a slightly later 2.7 core. I've only been in the passenger seat but it seems to work well
Lots of good info in the engine rebuild section on Pelican Parts forum that will help you get your head around different combos. Lots of jargon but If you read enough it should start to make sense but feel free to ask tech questions either here or on PP.
cheers
Your 2.2 would be a good start point for a short stroke 2.5 like the STs ran around 72 so still period correct. The 2.2s ran a 66mm crank which was the shortest stroke used (same as 2.0). The Ts did have non-counterweighted cranks but this isn't an issue unless you want to regularly rev it over 7500rpm. Fit some bigger cylinders and higher compression pistons, some later heads (cheap) which gives you bigger valves and ports, some S cams and rebuild/rejet the carbs. 72Ts ran carbs and so did early STs so I don't see much point is looking at MFi stuff. Fairly easy to get over 200hp with this combo.
The rebuild costs are much the same regardless of size and compression etc so you just need to decide what you want before you sell a good core. The cases and crank are the key starters, the rest just bolts on. You will most likely need new pistons and cylinders with any rebuild and size/compression doesn't really change the cost. There is limit with case size as to how big you can go and some bigger sizes will require some machining of the cases.
Selling yours and buying a 2.4T engine and upgrading it to RS spec with carbs is also a good option if you can locate a good 2.4. Another easy 200+hp engine. The 2.4s and 2.7s used a slightly longer stroke which gives a bit more torque but doesn't rev as well as short stroke. Just a different character. John F has this combo but I think he started with a slightly later 2.7 core. I've only been in the passenger seat but it seems to work well
Lots of good info in the engine rebuild section on Pelican Parts forum that will help you get your head around different combos. Lots of jargon but If you read enough it should start to make sense but feel free to ask tech questions either here or on PP.
cheers
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