How To: Build a 9000rpm SR20DET Head

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How To: Build a 9000rpm SR20DET Head

Postby AZhitman » Tue Mar 27, 2007 5:06 am

How To: Build a 9000rpm SR20DET Head

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


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Re: How To: Build a 9000rpm SR20DET Head

Postby AZhitman » Fri May 17, 2013 10:06 pm

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).

240sxzeg
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Re: How To: Build a 9000rpm SR20DET Head

Postby 240sxzeg » Sun Jul 07, 2013 2:24 pm

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

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Re: How To: Build a 9000rpm SR20DET Head

Postby Motoren » Sat Sep 06, 2014 5:06 pm

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

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Re: How To: Build a 9000rpm SR20DET Head

Postby PapaSmurf2k3 » Mon Sep 08, 2014 12:34 pm

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.

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Re: How To: Build a 9000rpm SR20DET Head

Postby Motoren » Mon Sep 08, 2014 3:52 pm

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

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Re: How To: Build a 9000rpm SR20DET Head

Postby 2_Liter_Turbo » Thu Sep 11, 2014 8:03 pm

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

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Re: How To: Build a 9000rpm SR20DET Head

Postby Motoren » Fri Sep 12, 2014 12:23 am

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

Kent

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Re: How To: Build a 9000rpm SR20DET Head

Postby 2_Liter_Turbo » Fri Sep 12, 2014 3:33 pm

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.


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