A series crossflow: Classic Cars forum: Classic Motorsports

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March 21, 2010 1:57 p.m. 1275 None

Does anyone have any opinions or thoughts on the A series crossfow heads that are listed on EBAY?
March 21, 2010 3:31 p.m. BoxheadTim HalfDork

Got a link? There are a bunch of designs out there IIRC. A lot of the Mini crowd in the UK use BMW K100 motorcycle heads for a reasonably cheap conversion.
March 21, 2010 7:57 p.m. 1275 New Reader

I can't seem to create a link. They can be found under " mg midget performance", all catagories. They sell them three ways: bare, assembled, and complete with twin 40 DCOE'S. Just curious to know about quality , etc.
March 22, 2010 7:20 a.m. TJ Dork

I was going to post a link, but after a quick look on Ebay I couldn't find the item.

As Tim said there are several designs out there. Could you post the item number?
March 22, 2010 1:29 p.m. 1275 New Reader

They where relisted, maybe that's why they could not be found. I just looked, EBAY #230451791091. The store name is "British Starters".
March 22, 2010 4:38 p.m. Trevor Dork

Produced by Pierce. http://www.piercemanifolds.com/

I have not seen any hard data. I know of one person that fitted one. He said it seems to have made an improvement, but has not had the car on the dyno yet.
March 22, 2010 8:21 p.m. TJ Dork

I think Pierce based their design on the minisport 7 port head. The one on Ebay appears identical to the one sold by minimania.
March 23, 2010 5:17 a.m. ddavidv UltraDork

Dollar per HP ratio would be pretty costly unless you're building full race, I'd think.
March 23, 2010 5:42 p.m. TJ Dork

True, but with 4 intake ports it an easy step to ITB and megasquirt without all the mess created by the siamesed intake ports on the 5 port head. That's the only reason I'd consider it. I would be better off spending that money elsewhere though, so a 7 port head will stay in the dream about it pile and not cross over into the do it pile.