HATCHY Posted December 29, 2006 Share Posted December 29, 2006 I was just curious if any of you guys have a 4 brrl carb on your soob. Or what kind of modification it would take. Yes GD I tried the search forums and it didnt bring anythig up! The soob I saw ith the 4 brrl was that guys rock crawler, that was on ebay. You know that beastly one with the under body armor and what nots.. Thanks guys Quote Link to comment Share on other sites More sharing options...
Jerry DeMoss Posted December 29, 2006 Share Posted December 29, 2006 Look at some of the pictures McBrat posted.He had one on his red brat.I know he had a 600cfm carb on there for a while! It looks great. Quote Link to comment Share on other sites More sharing options...
NoahDL88 Posted December 29, 2006 Share Posted December 29, 2006 It was Mcbrat who had it, it was pretty sick looking, but iirc, it didn't run so well, the motor needs 250-300 cfm tops, so the 600 is way overkill. Quote Link to comment Share on other sites More sharing options...
HATCHY Posted December 29, 2006 Author Share Posted December 29, 2006 Im going to have to check that out. Mcbrat that lucky punk:grin: not really a punk but u know... I need to def find out what it took.. Was it an ea81. that he had it on. or was it 82 Quote Link to comment Share on other sites More sharing options...
Jerry DeMoss Posted December 29, 2006 Share Posted December 29, 2006 Yes,Mick told me that it didn't have power in the bottom end.It needed to be reved a bit for the carb to be happy. Quote Link to comment Share on other sites More sharing options...
HATCHY Posted December 29, 2006 Author Share Posted December 29, 2006 Yeah I bet. I thpught it would be too much, but you never know. Subaru has yet to not suprise me.. Quote Link to comment Share on other sites More sharing options...
mcbrat Posted December 30, 2006 Share Posted December 30, 2006 I responded on your other thread.... http://www.ultimatesubaru.org/forum/showthread.php?t=69300&highlight=holley I used the weber adapter, then 2 weber spacers (.5" each), then a standard 2 bbl -> 4 bbl adapter. I had to widen out the holes on the 2 bbl side of the adapter to fit the weber pattern. It ran great at WCSS7, but for daily town driving, or just slow trail riding, it was a pain because I had to keep it revved to be happy. I have put my weber back on, and it's much happier, though since I still have the 2->4 adapter, I may someday try one of the 390 cfm's just for kicks.... Quote Link to comment Share on other sites More sharing options...
NorthWet Posted December 30, 2006 Share Posted December 30, 2006 The 390cfm I had on my Datsun L20 engine was really nice: Decent low end and mid to top end was great. Gas mileage was great, too, as long as I didn't make the secondaries roar too often. It might have helped that it was mounted on a dual-plane manifold. Engine vibration killed the carb pretty quickly. Shook one of the aux venturis right out of the carb. $300+ down the drain. :-\ Quote Link to comment Share on other sites More sharing options...
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