Motorsports Village

4150 E85 Carb Conversions
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Author:  ajcasini [ Sun Apr 10, 2011 9:40 pm ]
Post subject:  4150 E85 Carb Conversions

As I said before I have some good info on these carbs and wanted to share it with you.

With the 4150's they are about the same as the 4500's except that you cannot change the boosters without a special tool. I have done carbs from 750 - 950. The base setups I go with are as follows:

Booster: .170 - .174 downleg - depending on size
Mainwells: .160-.185 taper
Emulsion: 028-X-028-X
IFR: 040 - 048
PVCR: 072-082
CrossChannel .162
HSB 024-030
IAB 054-065
PMJ 82-92
SMJ 92-102

I have had great success with these carbs and baseline settings posted above. If you guys have any questions on the 4150s fire away.


Author:  ajcasini [ Tue May 03, 2011 8:00 am ]
Post subject:  Re: 4150 Carb Conversions

Well had a 950HP and a 750DP carb I converted for two friends of mine go down the track.

The 950HP went 10.25 @ 134 (May be wrong on MPH) which was .1 quicker than gas in the same weather.
The 750DP went 11.57 @ 113 which was .25 quicker than on gas in the same weather.

This was with no tuning and being a tad rich on the setups. Both of them were very happy with the results and cheap race fuel.

If anyone is interested in converting your 4150 let me know I can walk through a conversion on here.

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