How To: Build a 9000rpm SR20DET Head

Hope you guys enjoy the article, feel free to comment or ask any questions here!

Made a couple edits for you guys... Trying to track down Taesoo for the translated Tomei manual (looks like it got lost last year in the move).

i am doing solid lifters and solid cams in my 240sx sr20det i am haveing issues trying to figure out the shim sizes also i was wondering if you had that tomei manual availble for me to read so i can get the proper spec to shave my rocker arms any advice will help thanks

Hi, and thanks for a great guide

Is the guide still up to date?

I have a sr20det 2.2L hks 550hp 610nm running 8200 rpm.

I broke a valve guide so now it's time to make a new head.

I'm gonna change the valves and valve guides too. Which ones is the best? I can see that mazworks sells some 6mm exhaust valves that seems nice.

Best regards
Kent Denmark

I just read through the whole guide and it looks up to date to me, aside from a few broken pictures.

One thing I found odd is that Nissan (according to the article) specs the same cam clearance for both intake and exhaust. Typically, exhaust side has a bit more clearance, simply because that's the hotter side, and when things heat up, they expand (so you'll eat up more clearance).

Might want to double check that against the factory service manual to make sure you get the shim sizes correct.

Ok thanks alot. I will use the supertech 90lb springs and supertech retainers as I'm gonna buy most of it at mazworx and they have those.

Best regards
Kent

I run supertech springs and retainers with Ferrea +1mm valves and supertech bronze valve guides. I've been pretty happy with it, and I push mine to 8500rpm on the track with no issues thus far. I highly recommend doing the WPC treatment on the valvetrain parts, it really cuts down on the friction, which helps the longevity of the valvetrain parts.

Whatever you do, stay away from the BC stuff.

Flame suit engaged... ha ha

I dont think it's possible to get the stuff WPC treated here in Denmark.

Kent

Motoren wrote:I dont think it's possible to get the stuff WPC treated here in Denmark.

Kent

You should be able to, I know a certain German transmission manufacturer does WPC treatment to their factory parts, so the process exists in Europe.