65 replies to this topic

[AndrewJ530]

I'm pretty sure the 16 valve bike heads don't fit on a small bore either except with exceptional work to the block.

[samsfern]

8V Twin Cam bmw heads will fit all A-series blocks from 850 to 1460cc

[mab01uk]

Yes, the one in my link is 8 valve on a 850 small bore block:
Check out the photos:
http://www.lojomo.com/

[mini13]

Ive got some scans of an article about tuning the fiat lump if anyones interested.

as they are scanned, probably best if i dont post them thogh.

[trafficface09]

i have seen a punto head mrk 2 it looks nice, its the blue one on ebay.

i will have a look at that mini 13 if you wana pm me

[Asphalt]

Yes, the one in my link is 8 valve on a 850 small bore block:
Check out the photos:
http://www.lojomo.com/

Read! It's got about - nothing to do with an 850 anymore... except the block. With a rather extreme overbore... Not look how close the valve pockets are to the block and then substrackt the difference to the 850's original bore dia. from this particular engine's bore and see where you end...

[trafficface09]

found a video of a fiat mini conversion

fiat head 16 v

[pogie]

If you have a mill this mod is supposed to give you amazing power...

Owen, is that head yours and do you have any info on it?

I had a similar head sitting in my garage for nearly twenty years until I recently sold it to a freind, I tried to find out info about it but all I knew that it was made by a guy called Geoff Byron?? and had been used on a 1430 rallycross Metro by the guy I bought it from. I had planned to use it but bottled out and bought a MED Clubmans head instead although I did trial fit it onto the engine in my old clubbie just after I acquired it.

Attached Files

•  Head_011.JPG   112.02K   163 downloads
•  Head_021.JPG   97.6K   104 downloads
•  Head_031.JPG   90.34K   105 downloads

Edited by pogie, 15 June 2010 - 12:25 PM.

[mike.]

Looks pretty awesome!

[trafficface09]

that is awsome!

what happened to the head in the end?

[trafficface09]

ok i think i understand it bypasses the holes at the back that i think are called ports, does it go straight through to the pistons. i wouldnt mind seing a diagram

[Alburglar]

I'm interested to know how you plan on welding those plugs.

it is possible to weld cast iron, not easy though, the head needs to be heated up quite a bit before you weld it.

who says you need to weld the old intake holes up? you could make a plug and braze it, or simpler still plug and weld a steel inlet manifold and fit it on the back, or make a plate with the exhaust holes and all stud holes. Fit it in place with an exhaust gasket and inlet gasket, then bolt your exhaust (with another gasket) on to clamp it in place. - worst case scenario you'll need longer studs.

I like this idea, I hope someone does it.

...wonders off to look see if I have a scrap head knocking about.

Edited by Alburglar, 15 June 2010 - 02:56 PM.

[trafficface09]

plug an inlet manifold ha ha thats so simple

i was thinking however will this cause any flow issues?

maybe make the plug resess into the head by about an inch

[HARBER07]

Never said you couldn't weld or braze cast, was just interested to know how he would go about doing it.

[trafficface09]

no sorry i just thought when you said how? i remembered cast iron and it was dificult. however a bolt on inlet manifold that has been plugged and resessed.