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Cal-look/High Performance => Pure racing => Topic started by: lowfastbus on September 02, 2008, 20:42:07 pm



Title: Jetting * please help
Post by: lowfastbus on September 02, 2008, 20:42:07 pm
Hi guys,

After having my engine in the car for a few years I decided to try and make it a lil bit better.
When it was just finished I did a 13.5 on my first race meeting, year after 13.6, then 13.9 last year.
This year i changed the gearbox ( stock 1200 to stock 1600) because it broke on the 13.9 run. I also lowered it a bit in the rear to make it more stable.
I did several low 14s this year with a best off 14.04 at 97 mph.
All times where on street tires with a double quiet pack (13.6 run with A1 turbo muffler) and without belt.

To make it faster again I now cleaned the carbs, checked my jetting and gonna change or clean the plugs.
Jetting

155 main gas
180 air corr
F7 emulsion tubes
38 venturis
F10/70 idle

engine is a 2054 with FK10, wedge port heads and 9.5 compression

Any suggestions on the jetting or other tips to make it faster would be appreciated.
Thx
Jelle


Title: Re: Jetting * please help
Post by: LGK on September 03, 2008, 11:01:00 am

1 way...get it on the dyno Jelle and go from there...

I'm in the south of france right now some 30° in the sun  ;) ;)

I  can help you out when i'm back,on the 15 september the shop will be open again!

Cheers Steve


Title: Re: Jetting * please help
Post by: Diederick/DVK on September 03, 2008, 22:22:59 pm
38mm venturies? Don't you mean 37?


Title: Re: Jetting * please help
Post by: Roman on September 03, 2008, 22:46:47 pm
Try a 55 idle jet and adjust the mixture screws again.