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13t boost questions

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Gmstewart22
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Gmstewart22

13t boost questions

Post by Gmstewart22 » Fri Apr 12, 2019 11:21 pm

Turbo technitions I need your input, I have a 98 v70 awd that is my new project car. I am curious if I get a custom tune what is the max boost I can efficiently run this turbo up to with stock setup and what kind of power gains can I expect?


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

tardcart
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tardcart

Re: 13t boost questions

Post by tardcart » Sat Apr 13, 2019 6:57 am

That should be a 15t in there? Is it a low pressure turbo 2.4? or 2.3T? If its the 2.4 better leave it alone.



Sommerfeldt
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Sommerfeldt

Re: 13t boost questions

Post by Sommerfeldt » Sat Apr 13, 2019 8:30 am

tardcart wrote:
Sat Apr 13, 2019 6:57 am
That should be a 15t in there? Is it a low pressure turbo 2.4? or 2.3T? If its the 2.4 better leave it alone.
The ‘98 should have a 13G or 16T.

- S


'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

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scot850

Re: 13t boost questions

Post by scot850 » Sat Apr 13, 2019 11:59 am

V70 AWD/XC have a 13T and c. 193 bhp. These are good turbos as standard as they have a fair amount of torque low down in the rev band. Surprised a few cars with my 98 XC at the lights!

Neil.


2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

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Gmstewart22
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Gmstewart22

Re: 13t boost questions

Post by Gmstewart22 » Sat Apr 13, 2019 2:06 pm

I'm about positive it's the 2.4 with a 13T, I have 3 of them and would like to get a tune and run about 10# boost run the cutoff at about 11.5 psi, these lpt engines are getting more and more popular as mild build projects.
I will be rebuilding this block eventually with stouter internals long term I want a sequential setup on this car. Fyi this is not my daily I drive a silverado as a daily. I want to make this car a little snappier while I'm rebuilding the donet block!


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

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Gmstewart22
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Gmstewart22

Re: 13t boost questions

Post by Gmstewart22 » Sat Apr 13, 2019 2:10 pm

*doner* block


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

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abscate
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abscate

Re: 13t boost questions

Post by abscate » Sat Apr 13, 2019 2:52 pm

Check out the Speed forum below ...apologies for missing this earlier but Im a stock guy...

viewtopic.php?f=5&t=86785


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tardcart
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tardcart

Re: 13t boost questions

Post by tardcart » Sat Apr 13, 2019 5:30 pm

The td04-13 doesnt make a lot of volume so it sort of gets swallowed up at high rpm and open throttle with a 2.4 later engine. I dont think it would make more than 5 psi at full rpm and throttle if even. You can find out by disconnecting and plugging the wastegate vac. line but go easy at low rpm. at low rpm it could make 15lbs and maby bend a rod. You dont really need a tune unless you are going to increase the turbo size. there is no harm in an uncontrolled small turbo, just dont lend the car out and feather the throttle from a stop.
there are specs out there for volume of air per psi for turbos, and you can figure the volume of air digested by 2.4 liter engines at a rpm corrected by added pressure.



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Gmstewart22
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Gmstewart22

Re: 13t boost questions

Post by Gmstewart22 » Sat Apr 13, 2019 5:36 pm

I think without a tune the computer registers over boost and compensates with fuel then the car falls on its face at least that's how my wife's 2000 lpt works anything over I think 6 or 7 psi it cuts fuel and falls on its face and recovers again a few seconds later. Were the pre 2000 cars different?


2000 v70 GLT
1997 v70 AWD lpt
1997 v70 AWD lpt "rally rig"
1995 850 T5

tardcart
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tardcart

Re: 13t boost questions

Post by tardcart » Sat Apr 13, 2019 6:31 pm

not sure when boost pressure became part of the ECU input. 2000 im guessing, could be 99. Im only guessing, but people use the 99 and 98 ECU in 850's so must not have boost pressure input.



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