Weber IDF Main jet help |
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Weber IDF Main jet help |
tornik550 |
Aug 11 2010, 07:29 PM
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#1
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Senior Member Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None |
I am in the process of tuning my car after a rebuild. I have dual weber 40's. My engine is a 2.27L. Everything is going pretty well. I am slowly getting the jetting closer and closer. I was driving around at about 60mph yesterday. The head were hotter than I like (325 degrees). I checked the spark plugs and they were bone white. The main jets were at 160. I increased them to 170 (above 160 I only have increments of 10). With the increase to 170, the car is running very well and the temp at around 60mph cruising is around 275. I sped home, tuned off the car and took out the plugs- bone white. I was quite surprised.
The main jet size sounds high too me. Does it sound high to everyone else? Is it possible that I am needing a high main jet size because of the float level? I have my floats set at 10.5 with the gasket. Any opinions would be greatly appreciated |
Jake Raby |
Aug 11 2010, 08:18 PM
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#2
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
What size venturis?
40s are quite small for a 2270 |
type2man |
Aug 11 2010, 08:39 PM
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#3
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Member Group: Members Posts: 353 Joined: 3-March 09 From: Miami, Fl Member No.: 10,127 Region Association: South East States |
What size venturis? 40s are quite small for a 2270 What size idles? At least 60 or 65's. You should be running at least 44 webers or better yet 45 dells to feed that puppy. If you can't, then run bigger vents, at least 30's or 32's. You probably have 28's on it. |
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