Andrew,
All the following rods use a 59.942mm crank journal.
L20B 145.9mm, LZ20 152.45, LZ22 145.9, LZ24
143.9
As you can see the only rod with some potential for lowering comp is the
LZ24, even then only 2 mm.
I personally would have gone for lower compression height pistons, (30 or
32mm compression height vs the normal 37.1mm).
What is your current comp ratio?
Do your homework on the turbo and find out the specs. The carbs, wastegate
and dissy seem all right.
If you dont want to spend cash dont use the bluebird head as it is! Use a
wade 487C turbo cam, 32:76, 76:32 0.495" lift .
I leave webers the way God made them. If you want a carb with different
characteristics buy another carb! I see where you coming from with
preloading the floats (potentially larger fuel flows) The normal way to do
this is to use a larger size needle and seat. Webers make them up to 2.50
hole diameter and that will flow enough to run a 5 Litre V8 using a single
45DCOE carb.
Cheers
Feral Errol
----------
From: Andrew Kubenk <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: time to build L20 turbo
Date: Wednesday, October 11, 2000 11:13
good evening ladies and gents
okay ive now got all the parts (i think ) that i need to build my motor.
here is the list
race prepped L20 block with everything balanced and mahle 88 pistons. dont
know what rods. rajay turbo. dont know what size but its huge. i have found
out that originally it was designed for a plane. the ar ratio is .8 and im
worried that itll be too big but im going to try it anyway. 2 X 45dcoe
webers custom turbo manifold with garret 32mm wastegate.series 3 bluebird
elec dissy. let the questions begin
firstly, i think that the comp ratio is going to be too high, so i was
wondering if there are other rods that i can use to drop the piston height
and hence comp
ratio. please advise secondly, im using a head off a bluebird series 2
in good nick and was wondering what i should do to it ( without spending
too much cash ) to make sure it flows enough etc before i put it on. Also
what cam sould i use (the lumpier the better)lastly, does anyone know if it
is possible to preload the underside of the floats in the webers so the
fuel pressure can be increased without overcoming the needle and seat. i
thank all for thier anwsers in these matters but i must add a final point.
so far i have only spent $1000 for all these bits and i plan to have only
spent another $500 to finish it. so please bear this in mind when answering
(good
but cheap options) as well as the fact that im not searching for
drivability, just raw power.
Thanks again all
Andrew
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