vB Easy Archive - Blow-off valves on Volvo S70 T5s...

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Blow-off valves on Volvo S70 T5s...
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Posted by: plastikman

Anyone out there have any experience with installation of blow-off valves on a 1998-2000 Volvo S70 T5 or an 850 T5? Where did you find the valve and who's the manufacturer/cross-application or was it universal? Also, aside from IPD, anyone manufacture downpipes or headers for the same app?

HELP would be MOST appreciated....

Posted by: plastikman

anyone....anyone???

Posted by: VOLVORacr

Quote:

Originally Posted by plastikman

anyone....anyone???

Check out Volvospeed.com forum. Alot of peolpe with modded Volvo's

Posted by: plastikman

checked..lots of people with info on modding s60s and s40s, and 850s, but no one who really has any infor about s70s....hmmmmmm.

.i guess the 850 is a close enough app, but i wanted to make sure

Posted by: VOLVORacr

Quote:

Originally Posted by plastikman

checked..lots of people with info on modding s60s and s40s, and 850s, but no one who really has any infor about s70s....hmmmmmm.

.i guess the 850 is a close enough app, but i wanted to make sure

Yeah the s70 is the same car for the most part.

I'm suprised, did you search? They also have to sections, FWD 97 - under and 98 - up.

I actually have a 94 940 RWD havent gotten to a decent FWD yet. Hopefully soon. If I can find one w/ a stick.

Posted by: plastikman

i know what you mean about searching...after looking for a year and a half i finally found my current driver - 98 s70 t5 5-speed black on tan, 70K - in edmonton of all places...had it for a year, completely clean slate...gonna start doing mods this winter for next summer...hopefully enter it at darknights...

Posted by: VOLVORacr

I heard that Canada got a early model 850 AWD you know anything about it. Would love to take a trip up there to get one.

Posted by: plastikman

i haven't heard that...i'll check with my mechanic...used to work at a dealer...i gotta see him anyways, my oilpan's cracked

...

Posted by: VOLVORacr

Quote:

Originally Posted by plastikman

i haven't heard that...i'll check with my mechanic...used to work at a dealer...i gotta see him anyways, my oilpan's cracked

...

Ouch, is it lowered?

Posted by: plastikman

nope...thats what i can't figure out...haven't driven it over a curb or parking median or anything either...its baffling...probably just going to get him to weld the crack if its not too big

Posted by: c^2

This is sorta off topic, but have any of you seen the sleeper Volvo 740 wagon that surfaced on Ebay a while ago? It had a GNX engine swap.

Posted by: plastikman

can't say i have, but i would love to see details if you have them

Posted by: plastikman

Quote:

Originally Posted by VOLVORacr

I heard that Canada got a early model 850 AWD you know anything about it. Would love to take a trip up there to get one.

It's TRUE!!!

yes they offered the 850 in AWD in estate and saloon models in Canada in 1996 and (early pre-70 series) 1997 models...my mechanic remembered seeing one in the toronto area recently for sale....1996 850 estate AWD....pretty barebones though...check this...180,000 kms, $13,500....i think thats kinda ridiculous, seeing as you can grab a 2000 v70 awd for the same price! but, yes, they do exist...lemme know if you want me to ask more details from him, and if you're interested in purchasing...i can forward you any links i get from him to you...

(btw, i may be selling my s70 t5 5 speed...i've been accepted to a university in the uk, so i may be selling to pay for my transition...i'll be posting at volvospeed.com and on the ipd website...if you know anyone who is looking or is interested, please let me know...i can forward via PM details about the car )

Posted by: c^2

Quote:

Originally Posted by plastikman

can't say i have, but i would love to see details if you have them

I searched and couldn't find it anymore.

I'm sure someone's seen it - if you have, post it up!

Posted by: plastikman

Quote:

Originally Posted by c^2

This is sorta off topic, but have any of you seen the sleeper Volvo 740 wagon that surfaced on Ebay a while ago? It had a GNX engine swap.

kinda on the same topic as yours, a friend of mine just bought a mazda 3 gt....he was thinking of swapping a s40 turbo (i think its a 2.4 turbo, but i might be mistaken)....i think its kinda crazy, but he seems pretty serious...i'd love to see the results of THAT swap

Posted by: VOLVORacr

Quote:

Originally Posted by plastikman

The European Focus that is based on the same car, i've heard has that engine.

Posted by: VOLVORacr

Quote:

Originally Posted by c^2

This is sorta off topic, but have any of you seen the sleeper Volvo 740 wagon that surfaced on Ebay a while ago? It had a GNX engine swap.

The car you are talking about was owned by Paul Newman. It was a black 740 wagon (estate for the rest of the world). I actually saw it in the Brickboard classifieds, www.brickboard.com. It definately was a sweet ride but way expensive, if I remember correctly, over 10k US.

Had all the Ipd goodies and everything else you can possibly think of and it was owned by Paul Newman

Posted by: Skylinepilot

Why is it so hard to install the BOV, what's making the install difficult enough to need help?

Posted by: plastikman

just the particular application....not sure if a universal valve will have an adverse affect on the pressure system wide, because I haven't really heard of anyone installing one....downpipes yes, but not BOVs

Posted by: Skylinepilot

How much boost does the car run? Are there Volvos running the same amount of pressure?

Posted by: plastikman

i think its about 8 or 9 psi...stock config is pretty weak...s70 is the identical engine as late-model 850 turbos/t5s...

Posted by: Skylinepilot

If a bov is really important to you then just do what those guys are doing. The bov is actuated through pressure, if you are running the same as them I couldn't see there being any problem.

One thing to keep in mind, bovs can be a small problem. Certain cars will run rich during shifting if you are allowing air to escape that a MAF has already accounted for. If you have no catalytic converters (like say you did a downpipe) you would like throw a flame through your exhaust during shifting, more prominent on dry weather days. One might think its cool, but on the other hand you aren't doing your motor any favors and the law might not be to happy if that caught their attention. But you can take this with a grain of salt, all cars are different.

Posted by: plastikman

backpressure and flaming are my top concerns...thing is that i havent even seen an 850 with a bov, and if i install a downpipe (which I have to cause of the terrible lag on volvo turbos) i don't want any bp or flaming...i spoke with my mechanic who's been a volvo tech for 20 years, and he suggested i "reach out" to the performance community...sorta lookin for a creative solution

...but when it comes down to it, the BOV isn't as important as the downpipe

Posted by: Skylinepilot

Well if you are doing a downpipe I would recommend a boost guage for before and after results.

The reason being, after a downpipe install boost creep can occur. What happens in certain cars is too much exhaust and a wastegate that can't flow enough air causes boost creep due to too much exhaust being allowed to spool up the turbo. This might not be an issue with this car but if you are going to be a pioneer tuner you might want to be safe before you leap.

Does the car have a catalytic converter before the turbo (like between header(s)/exhaust manifold and the turbo itself)? If so this would be the best catalytic converter to eliminate if you want to reduce lag. If there isn't one then don't worry about it.

If you are worried about flames be cautious of using a bov in conjuction with a catless exhaust.

I am kind of glad to see you are putting performance before accessory... downpipe before a bov. I have to admit a lot of my knowledge is more geared towards subarus but a lot of info is global. One suggestion in place of a blow off valve is to check and see if you have an intake silencer on your car. Many people just remove this part of their car which would normally be before the air box. If you can do this safely (meaning it won't remove sensors, won't cause hydrolock on a rainy day) you may be able to hear the engine, turbo and stock bov or bpv better. On Subarus, this is pretty sufficient in place of a bov.

I'm going to sleep now so if you respond I will check this thread tomorrow. Good Night.

Posted by: c^2

Quote:

Originally Posted by VOLVORacr

Had all the Ipd goodies and everything else you can possibly think of and it was owned by Paul Newman

Found it!

http://cgi.ebay.com/ebaymotors/ws/e...TRK%3AMEWA%3AIT

I'd have bought it if I had the extra cash to.

Posted by: VOLVORacr

The BOV on the S70 is integrated into the Mitsubishi turbo. If you wanted to go with an aftermarket type you can remove the oem BOV and on the VOLVOspeed.com forum there is someone that sells the blanking plate to cover up the old type. Once the OEM bov is eliminated you can have an aftermarket type attached, the easiest way would be to have it welded to one of the pipes. Sorry, I have yet to own a FWD so can give the specifics.

Posted by: hotch

98-00 S70 is damn near identical to the 96-97 850

I haven't installed a BOV in mine, though