As new
Fit any 3.5 V8 efi
single boot tank
Offers around £350
Tel 01983 524912
Lee
As new
Fit any 3.5 V8 efi
single boot tank
Offers around £350
Tel 01983 524912
Lee
Is a kit for an efi different for a kit for a normal carbed v8?
I'm after one for a normal v8.
If it will fit mine -
What size is the tank (capacity and external dimensions please), and where about are you!
Thanks
On or around Thu, 08 Apr 2004 09:10:35 +0100, Tom Woods enlightened us thusly:
you'll need different mixers.
The only problem with these mixers is that they significantly reduce the airflow into the plenum chamber. Probably OK for a standard car but it'll strangle a tuned motor (BTDT).
Malcolm
On or around Thu, 8 Apr 2004 09:47:30 +0000 (UTC), snipped-for-privacy@cix.compulink.co.uk enlightened us thusly:
you can specify different sizes; I've heard a formula for this - mixer size is 7-10 mm² per hp. if you work this out for a 150 HP engine, you get
36-44mm dia, roughly, for a single mixer, or 25-31mm dia if you have twin mixers. I think mine's running 2x32 at the moment, which is towards the high end, but they were originally got for an engine rated at 180 HP. This might of course be why it's not running right :-)if you start tuning the V8, 'specially a 3.9, you should easily get it over
200 bhp. feeding in 200, you get mixer size 42-51mm for a single mixer.AIUI, especially with open loop, the larger the mixer the more critical the tuning, 'til you reach a point where it'll not run at all. Using a mixer a bit on the small side makes for easy tuning at the expense of a bit of top-end power.
Mine was a Rovertec-modified 4.6 with 280bhp (in fact a similar setup to my current 130 although that is running a Weber 500) and that had a Mark Adams enlarged plenum and we couldn't, at the time, get a decent trade-off between petrol and LPG performance. The largest mixer that would work cost me 20bhp on petrol! I know these figures as Brian, at Mech Repairs in Cheltenham, did a back-to-back rolling road test with my 4.6 and a 5.7 Overfinch and the power and torque figures were very similar.
Malcolm.
On or around Thu, 8 Apr 2004 19:56:54 +0000 (UTC), snipped-for-privacy@cix.compulink.co.uk enlightened us thusly:
I think you almost always (bar for impco-style variable mixers, maybe) end up with some restriction. However, if yer getting 280 BHP anyway, then losing 20 is not the end of the world, if you can get summat similar on gas. What power did you get on gas from that engine?
did have an off-thought that maybe the mixers are a tad oversize on mine now that it's "only" running 9.25:1 pistons (and composite head gaskets, so mebbe nearer 9.15:1), rather than the 10.5:1 it started out with, and that this is making it difficult to get it running right.
Hi Tom
40 litre tank, fits in the spare wheel recess in the bootRegards
Lee
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