i think i have found the
problem................
the main jets were poverty
type soldered and re-drilled ones......they were leaking fuel.
replaced main jets and it
seams ok for now.
the engine was built about
5 years ago (previous owner) with Z24 crank, Z24 rods, 88 mm Z22 flat
tops, a wierd 40/80 cam (very blocky is shape), new 45's with 38mm chokes,
datrally style manifold, s2 bb ignition (re-graphed), 200B head with slight
porting and 44mm inlet and 36mm exhaust valves. bore-88,
stroke-96mm.
when first built, it made
10:1 comp and approximately 130 bhp at wheels at only 5000 rpm. it made
122 bhp at 4000 rpm !!!!! wierd cam ???
now it has a 1.5 mm
aluminium spacer (i think 9:1) and smaller jets
my plans are to pull the
head off, inspect bores and valve clearance and buy a wade/datrally 76 deg
cam. i don't know if it is a stroker thing or cam specs but it doesn't want
to pull any more than 6000 rpm.
the head has had a decent
shave, so i hope the valves don't hit the slugs when i put the 76 in. also
rocker geometry may be a problem.
any ideas,
thanks,
duncan.
>hello,
>
>first of all, is it a datrally engine?
>
>if u tell me these things :-
> - what pistons are in it
> - what camshaft is in it
> - is the manifold is a datrally one
> - have the lash pads been done
> - is it split timed
> - does it have vernier camshaft gear
>
>if u answer these i can help u set up ur webers 4 u.
>
>Aaron Thorp
>[EMAIL PROTECTED]
>
> ----- Original Message -----
> From: Duncan Shillito
> To: [EMAIL PROTECTED]
> Sent: Tuesday, October 02, 2001 6:13 PM
> Subject: weber tuning
>
>
> listers,
>
> i'm having fun trying to achieve smooth slight acceleration
with twin 45s on my 2.3 L series. full throttle is good but it backfires
through the carbs during slight accel and cruise. i'm thinking that the idle
jets are too large and there is too much fuel.
>
> i have 55F9 jets but have tried 50F6 - worse.
>
> there is a aluminium spacer under the head (starting to leak
oil)- achieving 9:1 comp now but over 10:1 without it.
>
> any ideas ????
>
> thanks in advance,
> dunc.
>
>
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