KFXLLUMAR

Does anyone know if the head from a .18 os marine motor will fit on a .18 tz? I want to buy the tz for my rigger, but don't want it air cooled.

Ron Olson

My Feedback: (1)

It should be a bolt-on.
Myself, I like the heat sink heads when I use them, no plumbing to run and it can be cut down as they get plenty of air because they are well exposed unlike being under a Lexan body.

quickwedge

My Feedback: (1)

I used that same head and all I had to do was open the holes up as the head on the tz used larger bolts.







quick

KFXLLUMAR

Thanks for the help. I am going to give it a try.

SteveC68

Aren't all the TZ motors turbo heads? Would you be changing the compression with the marine head? I don't know, but I'm interested.

Steve

mikef18

I used the O.S. .18 marine head (black) on my TZ but found that in addition to opening up the bolt holes I also had to mill the underside of the head because the outer ring of the head bottomed out on the crankcase cooling fin before the head was seated on the sleeve. I took this area down even with the area that the shims seat on. It seems to work fine. The O.S. .18 engine has the top cooling fin lower than the top of the sleeve so there is no conflict.