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Author Subject: mi16 head on GTi block
mxcrazy

Regular

Location: hastings

Registered: 22 Jun 2009

Posts: 456

Status: Offline
Post #1
Is this fairly straight forward?

i dont want to know why or why not to do it, just asking if it is viable, and problems encountered if any. Its from a 1905 alloy block.

want to use the Mi 88mm crank too, so i assume S16 rod/piston dimensions to be used, possibly go to 87mm bore yet though.

Basically i want to build up a decent spec motor, ie, T/Bs, management, cams, high comp, plus possibly the bore increase as well as stroke.

Ive been offered a Mi16 engine in boxes, the head has 1mm oversize valves and the porting/seat angles to match. Never used since done, was a spare for a 205 mi16 engined autograss car.

Also has anyone fitted the GTi6 exhaust manifold to the Mi head before, it has different stud arrangement.

Thanks Big grin
Posted 18th Nov 2009 at 00:36
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,838

Status: Offline
Post #2
mxcrazy wrote:
Is this fairly straight forward?


YUP

mxcrazy wrote:
want to use the Mi 88mm crank too, so i assume S16 rod/piston dimensions to be used, possibly go to 87mm bore yet though.


good plan, they'll go straight in there and give you a decent compression ratio, valve cutouts may need to be made deeper to run a worthwhile cam lift though.

mxcrazy wrote:
Also has anyone fitted the GTi6 exhaust manifold to the Mi head before, it has different stud arrangement.


can and has been done, not worth the effort though as you can get a 4 branch manifold to suit in most cases.

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Posted 18th Nov 2009 at 00:43
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mxcrazy

Regular

Location: hastings

Registered: 22 Jun 2009

Posts: 456

Status: Offline
Post #3
welshpug! wrote:
mxcrazy wrote:
Is this fairly straight forward?


YUP

mxcrazy wrote:
want to use the Mi 88mm crank too, so i assume S16 rod/piston dimensions to be used, possibly go to 87mm bore yet though.


good plan, they'll go straight in there and give you a decent compression ratio, valve cutouts may need to be made deeper to run a worthwhile cam lift though.

mxcrazy wrote:
Also has anyone fitted the GTi6 exhaust manifold to the Mi head before, it has different stud arrangement.


can and has been done, not worth the effort though as you can get a 4 branch manifold to suit in most cases.


Perfect, thank you! Big grin
Posted 18th Nov 2009 at 14:04
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