16v head on 20v block

[3s-86]

Yes 20v & 16v blocks are identical
You just have to remember to swap the water pumps and housings & pipes
around to suit and also obviously the head gaskets too!

[trueno85]

i spoke to sprinterman and he said that he has done it a few times as it get the extra compression and better reving.

also cabletie has a 20v bottom end running in his trueno

[Sam-Q]

which combination are we talking now?

[trueno85]

putting a 16v head on a 20v bottom end

[Sam-Q]

the 16v heads have a bigger chamber than either of the 20v heads so you would lose compression

[trueno85]

just repeating what sprinterman told me as im getting my motor rebuilt by him.

and cable tie has this setup at the moment

[Sam-Q]

yeah I know, its all good I am just saying he is wrong

[trueno85]

haha fair enough im not too sure just driving cableties car and ill find out more of what sprinterman does when i go in later in the week

[hicomp4ag]

Can you ask him something ? what pistons ? what head gasket ? did he mill the head ? what cams ?

As far as I know, and I've tried it, trying to run bigger cams with a .8mm HG, and 111 pistons didnt work. Is his setup all stock ? just curious...
I hope that didnt sound like I was coming off bad.. because I'm so not... just curious, you know. thanks

[blair]

wow, dont know how i missed this thread...

But this is the exact reason i went with 20v bottom. blew my bigport and all the piping/manifolds/carbs etc were already there... why not gain a bit of free CR while i rebuild?

Have been running silvertop bottom end with .8mm HG and stock cams fine for quite a while now - Definitely more punch than any stocko bigport i've witnessed!