Posted 29 September 2011 - 08:02 PM
SO it a L28ET
spec piston 87mm Ross forged flat top
con rods are spool L28 rods H beem style
the crank is standard .25 main and .25 big ends has been drilled bunged all parts have been balanced and new spigot bush fitted
it runs a NC girdle and ARPstuds in the mains and head
the sump is from Arizona z car
oil pump is a turbo type
it has new timing Chane and guides with new crank sprocket and SW adj timing gear
cam is a PMC turbo spec 280deg 550 lift new rockers springs are HSD retainers are high side billet steal, valves are 44mm in 36ex and the head is a P90 ported PMC turbo spec
inlet is a custom ported unit
ex manifold is a jap made unit and is very well made the turbo is a 35.40r with a .64 rear for mad responce
Posted 30 September 2011 - 07:57 AM
Posted 30 September 2011 - 11:56 AM
I found mine tapered off quickly up in the revs with the .63 but it may have been something else restricting it on my setup.
Posted 30 September 2011 - 12:36 PM
Posted 30 September 2011 - 02:20 PM
P90 head with flat tops is somewhere around 8-9:1 comp
Why the flattop pistons for a turbo build Peter?
My N/A P90 runs domed pistons to get comp up to 10.5:1
Peter will be able to verify/correct me
Posted 30 September 2011 - 04:01 PM
flat piston is nice as there are no sharp edges =no hot spots
Posted 30 September 2011 - 08:31 PM
i think you may have had some other problem as i have made 530 hp at the wheels with a 3540 .63 and 7500rpm
Yep, I wasn't even in the ballpark of that kind of power
Posted 30 September 2011 - 09:48 PM
Posted 06 October 2011 - 10:29 PM
Should be plenty lively enough for the new owner in a street car anyway
Posted 14 October 2011 - 10:18 PM
off the girdle and the spacers that you need to make it all work
Posted 15 October 2011 - 06:11 AM
Secondly with the girdle, is it necessary if you are going with the Arizona Z aluminium oil pan, which is saif to give more strength? The more the better I suppose?
Pretty excited to see how this build comes out as I'm getting ready for a 28ET as well.
Posted 15 October 2011 - 07:25 AM
Posted 15 October 2011 - 08:19 AM
But the girdle adds rigidity to your crank, reducing crank flex.
So even though they do the same thing, it's in different areas.
The girdle also acts as a bit of a windage tray and crank scraper, reducing the amount of oil mist in the bottom end.
Posted 15 October 2011 - 03:31 PM
Posted 15 October 2011 - 05:37 PM
Posted 15 October 2011 - 05:57 PM
Posted 15 October 2011 - 06:13 PM
Posted 15 October 2011 - 10:41 PM
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