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Old 02-03-2003, 10:11 PM   #1
2002whitewrx
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Default is there any turbo that will work with the hks d/p?

I know they say the hks d/p won't work because of the wastegate but has anyone tried is there any turbo's that will work with this d/p? Also could a turbo shop or machine shop make my hks d/p work with aftermarket turbos? Surely there has to be a aftermarket turbo that will work with this d/p. I know there are alot of threads on this subject but I couldn't find any to answer my specific questions and you guys are always helpful. Do the hks turbos work with their d/ps surely they would have to who would design a d/p to not mate up to their other parts it would be unethical. Someone please help me the d/p has centimental value more than anything so I want to keep it but I want to purchase a turbo soon. thanks alot
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Old 02-04-2003, 07:35 AM   #2
2002whitewrx
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why has 29 people looked at this and not helped come on guys help me out here.
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Old 02-04-2003, 07:57 AM   #3
NavyBlueSubaru
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Perhaps its just the general belief that anybody who is upgrading or thinking of upgrading to a larger turbo would have the sense to buy a better downpipe than the HKS one. Sure its inexpensive and "works great for the price" but if you are gung-ho enough to swap out the turbo, why not just get a nicer d/p with bellmouth or divorced wastegate? Kinda silly for a car to have a bigger turbo mated to the cheapest downpipe money can buy. And that is why nobody is helping, i would assume.
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Old 02-04-2003, 02:14 PM   #4
2002whitewrx
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The d/p was a gift and there are alot of d/p that arn't bellmouth but still work with bigger turbos I just don't understand why the hks won't. has anyone tried it or people just assume it won't work.
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Old 02-04-2003, 02:29 PM   #5
Jedrex
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Default hks

Who says it won't work? It is not optimal, but it's better than stock. Throw it on there!
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Old 02-04-2003, 02:30 PM   #6
STR8OUT
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Quote:
Originally posted by 2002whitewrx
The d/p was a gift and there are alot of d/p that arn't bellmouth but still work with bigger turbos I just don't understand why the hks won't. has anyone tried it or people just assume it won't work.
Bigger turbos have a lot of lag to begin with. Some things you can do to help spoolup is to free up the exhaust flow before and after the turbo. The faster the exhaust can get up the uppipe and down the downpipe, the faster the spoolup of the turbo....

If you have a catless uppipe and a restrictive downpipe (HKS), then the flow of the exhaust is is restricted by the small opening in the mouth of the HKS downpipe, thus the turbo wheel doesnt spool up as fast...

Its common sense really. See below:

Look at this turbo, see the exhaust gas inlet? The uppipe feeds exhaust gas into there.

Now see Exhaust gas outlet? The exhaust gas comes out of the turbo through there and feeds into the downpipe. If the downpipe is small (restictive), then it takes the turbo longer to spool (which sucks for big turbos due to their lag issues)



Hope that helps,
-Brian
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Old 02-04-2003, 03:27 PM   #7
2002whitewrx
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So the wastegate is fine it dosn't hit the downpipe the only problem is the hks will push exhaust gas back into the turbo because it can free it easy? bosal isn't bellmouth but people say it works fine..
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Old 02-04-2003, 03:45 PM   #8
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An aftermarket turbo will work with the HKS D/P. You will most likely get boost creep due to the plate design of the D/P (no bell mouth or sep waste gate tube) but it will work. It will be better then the stock D/P at least (which is the same design but smaller in di. and has 2 cats in it) If it was a gift and you want to make use of it, go for it. You may want to upgrade to a better design at some point. If you due a search you can find a lot of info on the HKS D/P. Good luck and enjoy your gift.
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Old 02-04-2003, 03:51 PM   #9
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any non bellmouth pipe MAY work "fine" in that it physically fits and alows the car to run. BUT you are doing a HUGE disservice to the car by going to a larger turbo with a NON bellmouth pipe.
You may as well just buy a bellmouth pipe and not do the turbo. I really believe you would get more out of your car.
Besides, if you can afford a new turbo, you can afford to sell the HKS and buy a better pipe. Not that the HKS isnt great for the $$ but its just not sufficeint for a larger turbo.
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Old 02-04-2003, 04:26 PM   #10
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TD05-16G fits fine.
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Old 02-04-2003, 04:27 PM   #11
2002whitewrx
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the hks d/p was a gift that is why I won't part with it I can afford any d/p I want but I want this one. So if I take my hks to the machine shop and had them make a 4" bellmouth on the hks it would work great right? Or is the diameter of the pipe in general to small also. Thats all I'm trying to figure out is if it's just because it's not bellmouth is why people dont run them? Thats the only reason right? Cause I could have it made in to bellmouth for about 20.00 dollars.
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Old 02-04-2003, 05:22 PM   #12
2002whitewrx
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so a mitsubuishi turbo will bolt up just fine I've got one of those lying around somewhere a td05h big 16g but I didn't think it would work it's off my friends dsm.
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Old 02-04-2003, 05:35 PM   #13
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no, only subaru bolt pattern turbos will bolt up
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