kevandalice

a lad in work has a 309 gti 1.9 8v he recons that you can just put the m16 head on it with no hassle. is this true?

dave green

I no you can fit the whole engine without to mutch hassle. not sure about the head swop tho

stew205

Not with a lot of work doing first!

Needs cambelt tensioner put in the block.

Pistons are diferent in the two blocks+ 8v crank is weaker no oil cooling on bottom of pistons.

Not worth it unless its for race regulations. He may as well fit a complete Mi engine much easier and cheaper.

Thanks
Stew

roybacer

Have a read on the pgac, www.peugeot-gti.net, batfink on there is building a 205 race car using a 8v block and a 16v head

Karl

As a direct fit yes it will physically fit on the block, but the 8v pistons are incorrect in that the 8v has a bowled piston and the 16v a flat-top piston with appropriate valve cutouts. As such the 16v head onto 8v bottom end will give the incorrect C.R and give possible valve to piston contact!!!

You can use the 8v block instead of the 16v block, BUT the 8v block does not have the piston cooling jets, or provision for them. This is an issue if using the 16v rods and pistons with fully floating little ends as you'll need these jets to lubricate the little end bronze bush! The 8v also use a weaker liner and I dont suggest using these with a high power 16v engine as liner distortion is a problem.

Other than those issues theres a few little issues such as cam belt tensioners, different thermostat housings that have slightly different water plumbing and the 16v has a alloy finned sump as opposed to the 8v tin item. The 16v also has a larger clutch as standard which again should be used if you plan on high power.

Hope that helps!!