05-03-21, 10:33 PM
1. Well the cold rational assessment would be because the potential of more POWAH from motorcycles makes men silly and contemplate silly things.
2. More sensibly, because whilst the FZR400 engine is great, a little more poke for the easily achievable displacement increase with bolt on, readily available parts is a very attractive option - also see point 1, it also opens up the possibility of having readily available service parts, so much for the FZR400 is either NLA or only available in 'racing' versions for $$. e.g. Valves are a big issue
3. This will potentially go into an FZR250 frame, just throwing a YZF600 engine into that @ 95-100 HP isn't a sensible option - trying to avoid going the full point 1.
4. We're closer, we have the YZF600 cylinder height, also know that just due to the shorter stroke YZF600r Rods and pistons on the FZR400 3TJ crank, we're closer, know that it's 4.55m short of where it should be.
5.This has flow on benefits if we can keep a stock cylinder both the cam chain length and cam chain tensioner blades should remain unmodified hopefully from an appropriate model bike.
6. There is the possibility of other appropriately dimensioned rods in different lengths to go up in 0.5mm increments from 90.5mm - 92mm, then 93mm and 95mm, all the way up to 98.00mm
The aim is to get as close to a new bolt on top end as possible without having to resort to unobtanium of high $$ parts - sure we could just go for Carillo custom rods, but that violates the spirit of the project
You know how it goes, two blokes get to chatting on a forum...
2. More sensibly, because whilst the FZR400 engine is great, a little more poke for the easily achievable displacement increase with bolt on, readily available parts is a very attractive option - also see point 1, it also opens up the possibility of having readily available service parts, so much for the FZR400 is either NLA or only available in 'racing' versions for $$. e.g. Valves are a big issue
3. This will potentially go into an FZR250 frame, just throwing a YZF600 engine into that @ 95-100 HP isn't a sensible option - trying to avoid going the full point 1.
4. We're closer, we have the YZF600 cylinder height, also know that just due to the shorter stroke YZF600r Rods and pistons on the FZR400 3TJ crank, we're closer, know that it's 4.55m short of where it should be.
5.This has flow on benefits if we can keep a stock cylinder both the cam chain length and cam chain tensioner blades should remain unmodified hopefully from an appropriate model bike.
6. There is the possibility of other appropriately dimensioned rods in different lengths to go up in 0.5mm increments from 90.5mm - 92mm, then 93mm and 95mm, all the way up to 98.00mm
The aim is to get as close to a new bolt on top end as possible without having to resort to unobtanium of high $$ parts - sure we could just go for Carillo custom rods, but that violates the spirit of the project
You know how it goes, two blokes get to chatting on a forum...