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Stock PSI on GL-10 Turbo Wagon?


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17 replies to this topic

#1 PandaRedTrueno

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Posted 12 June 2005 - 05:22 AM

Howdy. Names Cody, I'm from Texarkana, anyway I drive an 86 Corolla GTS (ae86) so I feel I lil outta place but I need you guys help. I recently decided to turbo charge the poweless 4age so I would have that lil extra power when I need it. So I went to a local scrap yard and managed to pull a Turbo off of an 86 or 87 (cant remember which) GL-10 Wagon Turbo AWD. My question is, what PSI does the wastegate release at? or rather what PSI did those cars run bone stock? I can't find it anywhere online nor in you tech section. The turbo is in perfect condition, no bent fins no shaft play at all. I just need to know what kinda boost its making, cause I'm installing on stock internals and don't really wanna get over 7 PSI. One more question.. what size is this Turbo? Like whats the numbers/letters that represents the model? Sorry I'm not really all that turbo smart, I'm still learning. So I ask the subaru gods, can you help me out here?

#2 Cougar

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Posted 12 June 2005 - 10:30 AM

I think the stock design was normally set at 5 psi if I remember correctly.

#3 calebz

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Posted 12 June 2005 - 10:51 AM

The wastegate on the VF7 opens ~8psi

#4 subyrally

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Posted 12 June 2005 - 12:08 PM

the turbo in my rx runs at 8psi.


hey, got any pics of the trueno? i always thought that was a cool looking car, i guess im partial to old school japanese cars. i still love my impreza though.

do you have any other mods done to it yet?

peace
tim

#5 PandaRedTrueno

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Posted 12 June 2005 - 02:26 PM

yeah I have a few pics, she needs alot of work still but a friend of mine is taking auto body at a local college here and is gunna do all the body work and maybe paint it too for the cost of materials. So hopefully soon she'l be more pretty. I still love her like she is though. Although I miust say I'v always had 2 dream cars, this is one and the other is an Imprezza WRX, just cant afford it, can barely afford putting this one back together lol. The white one is my friends SR5.

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#6 PandaRedTrueno

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Posted 12 June 2005 - 02:28 PM

alright so the wastegate is set for 8psi? or 7psi? on the GL-10.

#7 Myxalplyx

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Posted 12 June 2005 - 02:43 PM

alright so the wastegate is set for 8psi? or 7psi? on the GL-10.


The wastegate opens at a pressure between 59 to 69 kPa (0.6 to 0.7 kg/cm2, 9 to 10psi), according to my factory service manual. *Reference* Page 90, Section 2-7....Fuel Injection System.

The turbo itself is a VF7 model.

#8 PandaRedTrueno

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Posted 12 June 2005 - 04:42 PM

7? 8? 9? 10? now im confused lol. Ok the GL-10 I got the turbo off of was US spec. If that makes any difference.

#9 subyrally

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Posted 12 June 2005 - 05:11 PM

doesnt look too bad at all.

as for the turbo, im pretty sure that its set to run at 8psi, thats what mine has done with both engines ive had in the car. in theory, it should boost a bit more with simple mods, but as far as ive seen personally, in more than just my car, the stocker runs 8psi normally.

#10 PandaRedTrueno

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Posted 12 June 2005 - 05:40 PM

ok thats great, 8psi should be just fine cause I'll be running on stock internals and the 4age wasnt exactly designed for turbo so it wont hold a whole lot more than that I dont think. Anyways, thanks for all the help guys.

#11 lastchance

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Posted 12 June 2005 - 07:34 PM

Are you boosting the stock 1.6? Why not get a $700 4agze? Or a 3sg? Even the ae101 N/A 20 valve!

#12 iluvdrt

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Posted 15 June 2005 - 12:32 PM

My gl10 boosts to 7 psi according to my boost gauge.

#13 All_talk

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Posted 15 June 2005 - 12:52 PM

I've tested stock wastegates on the VF7 (VF2?) off the car with a regulated air supply and got 7psi at lift off (first movement). The boost control on the '87 and later EA82T will run the pressure up to 9-10psi at times.

Gary

#14 TurboXT

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Posted 05 July 2005 - 12:30 PM

My turbo was 7 psi when it ran. I believe that the wastegate is set at 7psi. It may just depend on the actual turbo, who knows. I think that's sweet your turbo'ing an AE-86!

Have fun, don't blow her up!

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#15 calebz

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Posted 05 July 2005 - 01:27 PM

Just remember, its not rocket science. For the most part these turbos are old and used.. My wastegate may open at 8-9psi, but someone else with the same car may ony get 7 just because..

#16 TheSubaruJunkie

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Posted 05 July 2005 - 02:19 PM

I fixed a leak in my wastegate plumbing and the turbo stopped boosting to 8psi and is now only at 6psi max boost.

I just installed a Manual Boost Controller today to over-ride that, we'll see how well she handles at 10psi.

-Brian

#17 baccaruda

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Posted 06 July 2005 - 01:30 AM

um, they're IHI RHB5s, not VF7s. unless that's the same thing?

stock boost is supposed to be about 7-7.5 psi.

#18 subyrally

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Posted 06 July 2005 - 08:21 AM

yup, theys the same thing, as well as i think vf4 and vf2, or someting like that.

both of the engines i had in my rx had a vf4 turbo bolted to em when i got em. from what ive been told, its pretty much the same turbo.


um, they're IHI RHB5s, not VF7s. unless that's the same thing?

stock boost is supposed to be about 7-7.5 psi.






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