I run 600 micro sprint cars and have been using the R6 engine, but switcing the car to a F3 engine for next year to run in a different class.

I have a stock 96 F3 that I am installing Keihen carbs set up for alcohol (supposedly stock Honda carbs that have been converted for alcohol). The boots are impossible to get to slide over the the fittings on the block and carb.

The carb fittings are 1.730"
The block fittings are 1.650"

The boot side that says "carb up" which, I assume should mate to the carb, measures 1.550" and the other side measures 1.630".

The boots are a little stiff and I understand it should take some pressure to get the boots to slip on, but I have used a fairly extreme amount of force and cannot get the even to start over the fitting. I tried softening the boots with some WD40 which made them more pliable, but not enough.

I need your help!

Shawn

If this looks like a repost, it is. I should have posted my question here as opposed to the F3 page...sorry

 

Use a hair dryer, or heat gun to warm them up a bit they will slide right on, when I pull my carbs I always ride around till I hit operating temp and they come off without a fight...