Ported Rb26 Head Required

[tacker]

due to some d#$%head ( me ) being far to heavy handed with die grinder i have stuffed my rb26 head!

now looking to purchase one any suggestions on who i should contact.

[Devils_Advocate21]

How did you stuff it up?

[Shaun]

Nissan sell em for about $1400 + tax.

[tacker]

took to much out of the exhaust ports bugga!

So its a time issue now so i thought i would case out any heads that maybe for sale already done.

[blk180]

There are two in forsale section [200] one seller and RPM the other i think

[R31Nismoid]

If your after one thats for sale - go to the For Sale section.

Failing that - there are what, a dozen traders on SAU? Surely one of them can be contacted

Failing that (last resort) - www.yellowpages.com.au if you cant find one from a wrecker there - there aint any in the country...

Thanks.

[tacker]

thats ok i found 2 today thanks

cut the damaged head up today and found the back of the exhaust port under the valve seat is very very thin.

[datsqik]

You'll find most heads are thin in that area. I use some internal calipers and measure as i go. The 26 ports are quite small for the valve head size. I usually aim for a port size of 80-85% of the valve head size.

[The Mafia]

hhmm, not a bad thread. Will remember this.

[tacker]

yep this area has been placed on the no go zone with rotor bur flap sanding disk only.

Also the bottom of the exhaust port if its matched to the manifold gasket is also quite thin.

was also surprised to see a water jacket running through the web that seperates the two exhaust ports for the same cylinder, would have thought that to be solid

[Beer Baron]

PICS! I want to see this cut up head.

[tacker]

have to say please there beery

yer ok will take some snaps tomorrow

[Beer Baron]

sweet. please and thank you.

[H@ME]

+1 i'd love to see the pics of it as well for a laugh n education!! hehe sorry ot hear about ya problem.

[tacker]

and i thought i had the f*&^#r near finished aswell

[Roy]

If you end up getting a complete head i woudl be interested in buying the valves, springs, retainers, lifters etc etc off your damaged head. Hell i woudl look at the whole head except for the cost of shipping

[Duncan]

lol thats funny. nice to see someone else sharing the pain for once

[Blitz]

Had you knocked back a few cans before you started the power porting Chris?

How are those pics coming along?

[tacker]

hey yall here is my monumental f$%^ up

you will see the areas in red which you have to take care not to remove to much alloy.

I will post the pic with the water jacket running through the webbing in the exhaust port tomorrow just to draw out the agony lol

[Swiper the Fox]

hey yall here is my monumental f$%^ up

you will see the areas in red which you have to take care not to remove to much alloy.

I will post the pic with the water jacket running through the webbing in the exhaust port tomorrow just to draw out the agony lol

way too far there...you can see by the shape of the port that what you have done would actually hinder the gas flow. ie.too much of a right angled corner. GTR heads flow pretty well out of the box and for a circuit car id concentrate more on the inlet for light porting and knife edging and only give the exhaust a clean up and polish. For a given volume of gas to flow through an orifice (port) the larger the cross-section the less the pressure it will be and a "softer" hit in the manifold and on the turbine wheel. The larger port will in most applications actually decrease the response of the turbocharger.