38mm wastegate?

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Sep 24, 2006 | 09:44 PM

#21

TransAm6383

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...what are they?(company?) and is the 40 the same size as the 38?(in terms of fittament)

Sep 24, 2006 | 10:47 PM

#22

Silverback

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Quote:

Originally Posted by engineermike

More exhaust backpressure -> smaller wastegate
More boost -> smaller wastegate
Larger cid -> smaller wastegate
Larger turbo -> ???

More airflow = larger wastgate, so if that larger turbo is in a more efficient range then you’ll need a larger wasteage and vice versa. On the compressor side it also depends on how well matched the turbine is to the engine combination. If your engine power is restricted by the turbine side size then going with a bigger turbine could result in needing a bigger wastgate.

there are at least a couple of cars out there running >140mph using an old school, 35 or 38mm deltagate, and I've seen 400 hp cars with a T61 that a 38mm TIAL wouldn't control boost...

Sep 24, 2006 | 10:52 PM

#23

NOSjohn

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Whew - 60mm, nice!

Sep 25, 2006 | 05:51 AM

#24

Country Boy

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Quote:

Originally Posted by TransAm6383

...what are they?(company?) and is the 40 the same size as the 38?(in terms of fittament)

http://www.jgstools.com/turbo/index2.html

Sep 25, 2006 | 10:38 AM

#25

TransAm6383

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Quote:

Originally Posted by Country Boy

http://www.jgstools.com/turbo/index2.html

Thanks, It looks like the same size as a tial 38...anyone know if it will hold 10psi on a t76?

Sep 25, 2006 | 11:05 AM

#26

DrTurbo

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Yes it will.

Sep 25, 2006 | 12:09 PM

#27

TransAm6383

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looks like I found a wastegate for my PTK without having to change anything. Makes me smile. lol

Sep 25, 2006 | 05:45 PM

#28

MiaSSmaro98

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so will a tial 44 hold 5 psi on a t70 homemade kit

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Sep 25, 2006 | 05:49 PM

#29

Country Boy

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Quote:

Originally Posted by MiaSSmaro98

so will a tial 44 hold 5 psi on a t70 homemade kit

I dont see why not. Im hoping my little 38 will hold atleast 6 psi... ifd not, looks like more work. Ill just hack off all the 1.5" tubing and put 2" and use a 48mm...

Sep 25, 2006 | 06:04 PM

#30

MiaSSmaro98

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well country boy there are adapters that bolt to the 38mm flange and converts to a 44mm vband its like 30 dollars on ebay look into it

Sep 25, 2006 | 08:24 PM

#31

Country Boy

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I dont think those would work. I have 2 set points and if I add adaptors on the existing plates, its make the set distance even closer together.

Sep 26, 2006 | 01:28 AM

#32

MiaSSmaro98

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here check it out

http://cgi.ebay.com/ebaymotors/TiAL-...spagenameZWD1V

Sep 26, 2006 | 09:15 AM

#33

DrTurbo

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A 38 should work no problem is the design of the system is correct.

Sep 26, 2006 | 03:18 PM

#34

Country Boy

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Quote:

Originally Posted by MiaSSmaro98

here check it out

http://cgi.ebay.com/ebaymotors/TiAL-...spagenameZWD1V

NICE find!

Dr. Turbo, its the LS1 kit yall sell

Sep 26, 2006 | 03:31 PM

#35

JZ 97 SS 1500

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No prob with a JG40 or TSU38 gates. Either will flow plenty of air when the boost is cranked down. I run a single 38 with my PT88 and 383. 6-7psi is not a problem.

Sep 26, 2006 | 03:33 PM

#36

Country Boy

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how about the Tial?

Sep 26, 2006 | 03:43 PM

#37

JZ 97 SS 1500

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We and PT* dropped tial due to many complaints about boost creep. Plus I tested both gates myself on my personal car. The Tial was all over the place with a 7psi spring. With a TS gate I run now, its solid all the way to redline.