gsx-f__k Posted October 9, 2015 Share Posted October 9, 2015 Hi guys.I have and idea, probably insane one and that's why i'm asking. I have 1992 GSXF 748 and 1998 B12 1998 engines, i'm going to use B12 cases, transmission and crank in another project and get new block for it.I'd like to use head (DOT), cases, transmission and crank of 748 with B12 block and pistons.B12 piston pin size is different (IIRC 18mm vs 20mm) and rods are too big from big end.B12 block is also taller than 748 so 748 rods won't work either, so i thought using custom rods on this beast.Question is:If i get matching custom rods what it will make, 955 or 1157 or something else? Will 748 crank make it? I won't be using turbo or nitrous on this engine.Other options would be using B12 crank in 748 cases, IIRC it should fit or boring 748 to 955 (79mm). Any suggestions? Quote Link to comment
Duckndive Posted October 9, 2015 Share Posted October 9, 2015 Hi guys.I have and idea, probably insane one and that's why i'm asking. I have 1992 GSXF 748 and 1998 B12 1998 engines, i'm going to use B12 cases, transmission and crank in another project and get new block for it.I'd like to use head (DOT), cases, transmission and crank of 748 with B12 block and pistons.B12 piston pin size is different (IIRC 18mm vs 20mm) and rods are too big from big end.B12 block is also taller than 748 so 748 rods won't work either, so i thought using custom rods on this beast.Question is:If i get matching custom rods what it will make, 955 or 1157 or something else? Will 748 crank make it? I won't be using turbo or nitrous on this engine.Other options would be using B12 crank in 748 cases, IIRC it should fit or boring 748 to 955 (79mm). Stroke is determined by the crank not the length of the con rod .... Quote Link to comment
Pedda Posted October 9, 2015 Share Posted October 9, 2015 Why not use dot head on a B12 engine and done? Quote Link to comment
gsx-f__k Posted October 9, 2015 Author Share Posted October 9, 2015 I basically knew stroke is determined by crank,just wanted to ask to be sure. I could use B12 whole engine with dot head, but i have other plans for it and i have 750 engine wich i can use for this. 750 engine isn't worth much so selling it and buying another B12 engine is not first choice here for me.. So swapping custom rods, B12 crank or bore 748 block?With B12 block heat would not be a problem for sure. Quote Link to comment
bluedog59 Posted October 10, 2015 Share Posted October 10, 2015 You'll pay more for a set of custom rods than a good B12 engine. Quote Link to comment
gsx-f__k Posted October 10, 2015 Author Share Posted October 10, 2015 Engines are around 1000€/$1150 in Finland so rods may be around same price.I know i could get engine cheaper from Eblag.Anyway, it was just one option, i guess best option would be to bore 748 block.. Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.