| ausmini https://www.ausmini.com/forums/ |
|
| 1360 twinky, comp ratio and piston options? https://www.ausmini.com/forums/viewtopic.php?f=5&t=73441 |
Page 1 of 1 |
| Author: | Kennomini [ Thu Oct 06, 2011 7:03 pm ] |
| Post subject: | 1360 twinky, comp ratio and piston options? |
I'm building a N/A, 1360, A+ series, BMW K100, 8 valve donk and I'm trying to decide what comp ratio I should be going for and what pistons I should buy  Any ideas or suggestions will be appreciated.
Currently I'm planing on wedging the crank and re-using the standard rods. I'm also looking at getting a steel lightweight f-wheel which I might end up getting from the UK if I can't find anything locally that will be as good and as cheap. |
|
| Author: | TheMiniMan [ Fri Oct 07, 2011 9:59 am ] |
| Post subject: | |
11:1 comp ratio will be fine on these things in N/A form & Hypertechs or our own design JP piston will get you there quite handsomely 
but the hypertechs are far cheaper than the JPs so hypertechss are probly the go |
|
| Author: | Beanie [ Fri Oct 07, 2011 3:13 pm ] |
| Post subject: | |
Hey Miniman do the JP's already have the valve cut outs ? is there any benifit over the hypatecs ? Beanie |
|
| Author: | TheMiniMan [ Sun Oct 09, 2011 7:11 pm ] |
| Post subject: | |
no, the JP`s come with just a dish,,, you`d need to fly-cut them to suit your application,,, 8V or 16V dependant & they have a thicker crown, top ring is slightly lower on the piston than the hypertechs, so if you were chasing lower compression (Eg: turbo or supercharging) then there is Plenty of meat to rip off the top , still leaving a very strong crown thin rings too so they flex rather than just break |
|
| Page 1 of 1 | All times are UTC + 10 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|