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head rebuild for LPG

Posted: Thu Jul 26, 2007 7:07 pm
by killer_garden_gnome
can anyone give me some suggestions on head mods i can do and some prices, im takin the head off (suspected crcack) if so i will be gettin a new casting and starting from scratch and doin all the work myself, i recently got straight LPG so any help on gettin the right gear would be appreciated

Posted: Fri Jul 27, 2007 9:17 am
by jessie928
shave the head as much as you can, increase's compression heaps and makes a very big difference to performance and economy. you can also put holes in the head just above every exhaust port at the manifold mount plate, screw in a nipple in each and plumb it back to your top radiator hose.
other than that, port match it and bolt it all back up.


Jes

Posted: Fri Jul 27, 2007 1:38 pm
by killer_garden_gnome
wat is the pluming for, extra cooling?

Posted: Fri Jul 27, 2007 2:04 pm
by jessie928
it releives the super heated water from the water jackets above the exhaust ports.

see pics, compliments of anothetr boardmember

Image
Image

JEs

Posted: Fri Jul 27, 2007 2:08 pm
by turps
Jes
I have seen the same done on TD42's also. Main reason gets rid of hot spots in the head.