The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

MPPE progress? 1800

posted by  Phil S. on  Tue Jul 31 06:24 CST 2007
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 13:18 CST 2014
[RELATED]

I can use any head gasket, but it must be a B18 head, and the maximum bore is only 85.4mm. We did enlarge the chambers to unshroud the 42mm intake valve, vs. the stock 40mm. I'm not sure the ports could, or should, be enlarged enough for a larger valve than that to make sense. The rules are pretty restrictive and they do check... I was only allowed to change the valves at all because the car was already bumped up a class for having front disk brakes.

I see the carbs and fuel octane as the main limitations, so the rest of the engine is tailored to work with those (and the budget, as is always the case). Also, the racer's "home" track is quite short with mostly tight turns, so having a wide powerband is a major requirement (we're using an 8 lb. flywheel, BTW).

We'll just have to see how it goes. The guy's been running two to four seconds a lap behind the leaders with the pretty dismal engine he's used for the past five years, so this one may be all he needs to catch them. If not, we'll make some changes for next season.






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.