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Old 19th September 2011, 11:46 PM   #1 (permalink)
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Supertech valvetrain package ??

Hey, I'm building my RB26 and looking at Supertech products
saw this package which is really a good deal:
http://ipg-supertech.com/cart.php?ta...category_id=68


Valve Spring and Titanium Retainer Package ------- SPRK-ts1015/rb26
Supertech Complete Valve set 1.00mm oversize ----NIVN-1032, NEVI-1032
Supertech Bronze Valve Guides --------------------GDE-NSR7-ET

Tomei cams 272 lift 10.25
will be revving 8800 rpms 800+whp

do you recommend using this set up, any bad experience, anybody running them ??
are above parts enough? what do I need more

does it worth going 1mm oversize valves??
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Old 21st September 2011, 11:29 PM   #2 (permalink)
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Quote:
Originally Posted by Sniper1st View Post
Hey, I'm building my RB26 and looking at Supertech products
saw this package which is really a good deal:
www.IPG-Supertech.com - Supertech Performance Valvetrain


Valve Spring and Titanium Retainer Package ------- SPRK-ts1015/rb26
Supertech Complete Valve set 1.00mm oversize ----NIVN-1032, NEVI-1032
Supertech Bronze Valve Guides --------------------GDE-NSR7-ET

Tomei cams 272 lift 10.25
will be revving 8800 rpms 800+whp

do you recommend using this set up, any bad experience, anybody running them ??
are above parts enough? what do I need more

does it worth going 1mm oversize valves??
Supertech produce Tomei valves, as ive had both here on the shelf brand new in boxes. They are exactly the same product, the guides, springs and retainers appear to be different but still work ok. Considering you are only revving to 8800rpm they should be fine for your application.
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Old 22nd September 2011, 07:24 PM   #3 (permalink)
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You won't go wrong with supertech stuff go 1mm on the exhaust side.what turbo are you going to be running
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Old 26th September 2011, 01:24 PM   #4 (permalink)
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Quote:
Originally Posted by Red R Racing View Post
Supertech produce Tomei valves, as ive had both here on the shelf brand new in boxes. They are exactly the same product, the guides, springs and retainers appear to be different but still work ok. Considering you are only revving to 8800rpm they should be fine for your application.
Quote:
You won't go wrong with supertech stuff go 1mm on the exhaust side.what turbo are you going to be running
thanks guys, you mean on the exhaust side only,, why!!
I've BW 91-79 turbo rated 830whp I'm going to max out this turbo





any more input
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Old 3rd October 2011, 11:39 PM   #5 (permalink)
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wow...good find, thank you.

This package, B Poncams...6-700 street whp...any suggestions? Was running a T78 before the rebuild...
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Old 4th October 2011, 01:49 AM   #6 (permalink)
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Exhuast gases are less dense than inlet mixtures thus take up more space, to keep good flow exhuast valves need to be bigger
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Old 4th October 2011, 02:02 AM   #7 (permalink)
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Exhuast gases are less dense than inlet mixtures thus take up more space, to keep good flow exhuast valves need to be bigger
I understand the +1 on the exhaust side as I'm sure the OP does, the puzzling part is that Supertech seems to offer this package as +1 on both In and Ex...I emailed them to check.
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Old 4th October 2011, 05:05 AM   #8 (permalink)
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I must have misunderstood what sniper1st ment when he questioned only having oversize valves on the exhuast side
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Old 4th October 2011, 11:55 AM   #9 (permalink)
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I haven't received a reply yet, any idea why they'd go 1mm+ on both In and Ex?
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Old 4th October 2011, 01:15 PM   #10 (permalink)
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The trouble with the gtr head is the exhaust ratio is way down on the inlet for a turbo cylinder head this is why I said put bigger exhaust valves in, you can put oversize inlets in but unless you mod the port right it won't make much improvement for the cost of doing it.
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Old 9th October 2011, 09:33 AM   #11 (permalink)
Sniper1st is RH9 Club - 1000 on the way ;)
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so what you mean is putting 1mm oversize on the exhaust side only, will be more gain than getting 1mm oversize for both sides

so intake side will remain stock, stock guides, or have to change

thank you
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Old 9th October 2011, 04:10 PM   #12 (permalink)
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so what you mean is putting 1mm oversize on the exhaust side only, will be more gain than getting 1mm oversize for both sides

so intake side will remain stock, stock guides, or have to change

thank you
I thought andy meant +1mm intake is still smart, but only if you have the head apart already.

is it recommended to remove the intake squish pad if going +1mm on both sides?
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Old 9th October 2011, 06:56 PM   #13 (permalink)
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What Iam saying is unless you mod the inlet port enough putting 1mm bigger valves in will not see a big increase for the money it costs, don't leave the standard guides in fit the supertech ones.
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Old 10th October 2011, 07:48 AM   #14 (permalink)
Sniper1st is RH9 Club - 1000 on the way ;)
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ah thanks guys
thank you so much Andy for ur helpfull input
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Old 29th November 2011, 09:41 PM   #15 (permalink)
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So, before i order (sorry for beating a dead horse), I'm just getting the exhaust valves from Supertech, and sticking with stock intake valves.

Should I get in. and ex. valve guides and seals from them (they'll work on the stock in. valves correct)?

I'm also unsure about springs. I can't find specs on Poncams (B) to help me decide. I've heard of wear issues with duals, but I don't know that it'll be an issue with the small amount of street use the car will get.

Spring specs from Supertechs site
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