b230ft with b234f head

[WizuhD]

ok usually more valves means more flow=> more power. so why not use a 4 valve head on a B230FT?

does it work? has anybody tried it?

does anyone have an extra b234F head laying i can borrow? ;)

[evanjames]

greeting from a new member is australia.
the dohc head can be done. I have seen a couple over here. my father has a 740 twin cam(155hp). It does breathe better than both my volvo's (82 244gl b23e 136hp and 1980 242gt b23e 140hp). It is a popular swop over here for guys with 740 turbos. Good luck finding a spare cheap head though!

good luck with mods

[n xntrx volvo]

i'll be nice and say search with 16v or b234f as keywords. i think i've personally started two threads, as have most guys here. seems to be the first question people ask.

[Hacksaw116]

warning: check the head and block fort oil flow passages. my 760 had a block that was notched for oil flow but the shop guy bored it out 64 thousandths instead of 64 mm. Consequently, i had to go yank a junkyard block, but the head was notched on the junkyard block (instead of the block being notched on the origional motor) I had to notch my old head so that oil would flow... it woulds been a rude awakening if i hadn't caught that ;)

im not up to par with the part numbers but if the head you want has bigger valves then that is better. if it has bigger ports then it might give you some trouble because you are changing the rate of flow thru the head. Correct me if im wrong but these engines are designed to flow air at certain speeds, especially by the injectors. When i ported my head i port matched it w/ a gasket as a template, but didnt "open up the ports" like i would on a caurberated motor.

[Hacksaw116]

ok i totally misunderstood that... disregard the last post

[volvo944ti]

yeah search welth of info on board but what no one knows si if on a B230FT engien if the head will botl on with otu moddign teh pistons. on an na you have to get new pistons or machine the tops of them but on a turbo engine no one seems to know how much of a botl and play ti might be

[Hacksaw116]

yeah search welth of info on board but what no one knows si if on a B230FT engien if the head will botl on with otu moddign teh pistons. on an na you have to get new pistons or machine the tops of them but on a turbo engine no one seems to know how much of a botl and play ti might be

i was under the impression that the b230ft was a non interference setup... are you sayin the pistons need to be notched for valve clearance? or were you talking about the 16 v head (and if this is so, does it require said piston work??)

[volvo944ti]

i was under the impression that the b230ft was a non interference setup... are you sayin the pistons need to be notched for valve clearance? or were you talking about the 16 v head (and if this is so, does it require said piston work??)

the n/a b230 block is the 8v and yes non interference but when butting the 16v head from a b234 you need to haev the pistons machien o rjust buy new pistons. however teh turbo 8 valve motor b230ft has a different piston little deeper notch in it. an no one seems to know if you need to machine the piston notch a little deeper or not on the turbo motors. and rememebr this makes the car interference.

[WizuhD]

so it will bolt on, but no one knows what exactly has to be done to get it to work right...

sounds to me like a project 8D

[volvo944ti]

no people have doen it but i don't think they haev done it without machining teh stock pistons in a b230 block. and i've heard the b230ft block will have no problems just bolting the head down to it withotu rippign it apart to machine pistons. now all you have to do it lay some clay down and slap a 16v head on a b230ft engine and see how the clearences are