Venom Posted February 14, 2017 Posted February 14, 2017 What is the compression ( more or less) in 1216cc with hayabusa 81 pistons ? Is there a sense tu install them without turbo ( or NOS) ? Quote
yantosh Posted February 14, 2017 Posted February 14, 2017 about 8.5:1 I think, no fun without turbo 1 Quote
Venom Posted February 14, 2017 Author Posted February 14, 2017 13 minutes ago, yantosh said: about 8.5:1 I think, no fun without turbo thank you. Im going to instal RS Minuni 30 and Cam motion cams.Plan was intal hayabusa pistons but looks like there is no sense. Think will instal RS, Cams and do some head works .Looks like it will be better solution ... Quote
Venom Posted February 14, 2017 Author Posted February 14, 2017 11 minutes ago, R1guy said: Won't rs30 be too small? ups...sorry... I mean RS 38 of course Quote
Diebythereaper Posted February 14, 2017 Posted February 14, 2017 Busa pistons are great if going turbo and want a cheap piston option but I still prefer to get the proper shaped piston for the application - dished for turbo or raised/crowned for aspirated, Bike will fly with RS 38's but will guzzle fuel as well so be prepared 1 Quote
Venom Posted February 15, 2017 Author Posted February 15, 2017 23 hours ago, Diebythereaper said: Busa pistons are great if going turbo and want a cheap piston option but I still prefer to get the proper shaped piston for the application - dished for turbo or raised/crowned for aspirated, Bike will fly with RS 38's but will guzzle fuel as well so be prepared If bike will fly...its fine with me . Let him guzzle Quote
no class Posted February 15, 2017 Posted February 15, 2017 why RS 38's ??? had these in the past and hated them .....crappy slide design and always seem run on after you shut the throttle down....pain in the ass to tune also . If you can afford a few extra dollars .....TMR's are awesome .....as well as the Keihin FCR's. Quote
Gixer1460 Posted February 16, 2017 Posted February 16, 2017 Few extra $$$ - yeah like double'ish! I got RS40's and some FCR41's - both work good on my big GSXR but the RS's do rattle a bit (which is oldskool init!) 2 Quote
Venom Posted February 16, 2017 Author Posted February 16, 2017 "FEW extra dollars"???? Do you have some TMR FEW dollars much expensive RS ? :-) Quote
Venom Posted February 16, 2017 Author Posted February 16, 2017 6 hours ago, Gixer1460 said: Few extra $$$ - yeah like double'ish! I got RS40's and some FCR41's - both work good on my big GSXR but the RS's do rattle a bit (which is oldskool init!) Gixer1460 do you have a problems with slides in your RS carbs when you shut the throttle down ? Quote
Gixer1460 Posted February 16, 2017 Posted February 16, 2017 Nope! I've used two cable and single cable throttles and noticed no difference but i've heard they can get sticky if old! 1 Quote
no class Posted February 16, 2017 Posted February 16, 2017 Gentlemen..... I wish you much success and all the best with your project / projects . 1 Quote
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.