rb26 head build

[Predator1]

Hi,

Just wondering what other Nitto 3.2 owners are running or their heads? My 3.2 will be built in a few weeks, and am pondering on how much to spend on the head.

I have a 9180 with a 1.01 hotside. Will be looking at flex fuel as well.

What mods to the head are you guys running please? I have also bought a brand new head. So far I am thinking:

Cams
Tomei Cam gears(Already have)
Supertech dual valve springs with Ti retainers(kit)
Valve guides
Stem seals

I am also going to get the head ported and cleaned up where necessary. I don't intend on running more then 2bar, as the shaft speed will probably exceed 118k~.

How far are you guys going in terms of porting and head work? I understand that the stock head will give me loads already, however a light touch up wouldn't hurt.

[KiwiRS4T]

Depends entirely on your requirements. If it is a street car "a light touch up" will do nothing for you.

How much power do you want ? How fast do you want to spin your engine? Street, drag strip or circuit racing? An all out race build will be no fun to drive on the street.

Any head work that is effective will cost an arm and a leg.

But regardless of cam choice adjustable cam gears will give you more tuning options.

[klutched]

My heads being done atm for my RB34 running a precision 7675. It has the following:

Ferrea os valves, bronze guides, kelford beehive springs and ti retainers, race port and just general stuff like a deck, seat cut, valve seals etc. 

If you're going to port it definitely get the lumps removed on the exhaust side and smooth out the bowls. My machinist calls that his street port. It's around $800 for the street porting if I remember correctly

[Predator1]

5 hours ago, klutched said:

My heads being done atm for my RB34 running a precision 7675. It has the following:

Ferrea os valves, bronze guides, kelford beehive springs and ti retainers, race port and just general stuff like a deck, seat cut, valve seals etc. 

If you're going to port it definitely get the lumps removed on the exhaust side and smooth out the bowls. My machinist calls that his street port. It's around $800 for the street porting if I remember correctly

Thats fantastic, thank you so much. I spoke to a head machinist company, and they pretty much had said what you said about decking/seat/angles etc etc.

What cams did you choose just out of curiosity? Feel free to PM me if you like. I'm possibly going to go for 280/280, but not 100% sure yet.

[klutched]

Im using cams i already have as kelford have a 3 month wait on them atm. So theyre a custom kelford 272 10.25 lift. Gonna see how these go and then upgrade to their 288 11.05 cams

[Predator1]

You're on the waiting list as well. I've been recommended the 182-SE type that will be available Nov. Might work out as I intend on doing other things while my motors being built.

How difficult was it to remove the AC lines and refit them for your bay respray? I'm actually thinking the same, although I have ABS, so that might be a bit of a pain.

[klutched]

14 hours ago, Predator1 said:

You're on the waiting list as well. I've been recommended the 182-SE type that will be available Nov. Might work out as I intend on doing other things while my motors being built.

How difficult was it to remove the AC lines and refit them for your bay respray? I'm actually thinking the same, although I have ABS, so that might be a bit of a pain.

Nah a/c was easy, there wasnt any gas in em so just popped em off pulled the boots off and the painters taped it all up. I pulled my brake lines out as well. Just have to rebleed them when its closer to driving.