Stock BOV + HKS SSQ question (strange)

[kairojya]

I recently bought a car from a friend that i've been interested in for a long time. 97 240sx with an SR20DET swap. I drove the car from NYC to southwest Florida straight through with no issues, and my friend hasn't had any issues with the car. He's put 5000 miles on the swap and it's been garaged kept and he hardly would take it out in the 4 years he's owned it (14k miles on it since he bought it when it had the stock KA in it). This is my first turbo car and also my first manual car. I have a 2006 Scion xB and a 1991 Mazda Miata hardtop.

Anyhow, he showed me that the stock BOV is still in place underneath the fusebox. The line from the BOV to the "cold pipe?" going into the throttle body is hooked up, and the other same size line from the BOV to the intake itself (behind the MAF) is hooked up.

A friend of mine down here in FL looked at it (he has a MKIV Supra NA-T) and showed/told me that the vacuum line is not hooked up. He also said i should look into taking the stock BOV out and capping the other 2 lines that are connected cause he can't see why the stock BOV is needed. When my friend that i bought the car from showed/told me about the stock BOV still being there i asked him why couldn't i just take it out and run and connect the two lines leftover together, he said most people do that in some way but he didn't like the look of it so he just left it how it was.

Another friend told me that maybe the stock BOV could be leaking under higher boost, even tho it's set up to recirculate he said usually stock BOVs will leak out beyond certain PSI's.

I don't really know much about turbo setups but it seems to me i should be able to remove the stock BOV and cap off those lines or connect them to free up space and save some weight in the very least lol??

Stuff done to it that i know of so far:

Quote »Drivetrain:-1998 SR20DET-5 speed transmission swap-Infinity J30 LSD and axles-Greddy PRofec B-spec II-Blitz Dual Turbo Timer Digital Compact-HKS SSQ BOV-Greddy 24-SP(something?) FMIC-Enjuku thrush downpipe?-Apexi N1 catback-Gutted cat converter (will be replaced with Megan test pipe)-16mm throttle body out of automatic SR20de, stock is 15mm?-B&M shortshifter-Exedy 3-pack clutch (something along these lines? 2400lb)-OMGSKYRINE R32 shift knob-boost gauge that i don't understand (not in PSI or bar )-Flex-a-Lite dual electric fans-mad tyte JDM belts (forget name also lol)-Has A/C, the SR20 compressor using the rest of the KA stuff i guess.

Wheels:Work Emotion XD9 (not sure on offsets yet)F: 18x8.5R: 18x9.5

Suspension:-D2 36-way adjustable coilovers-aluminum rear subframe 'bushings'-300zx front calipers and drilled/slotted rotors, drilled/slotted rotors in the rear too

Exterior:-Carbon Creations OEM style hood-OEM front lip-Nissan Maxima OEM HIDs[/quote]

[homeslicej2]

Wait, you have two BOV's? Get rid of the stocker and use this guide that Hijacker translated from the J-spec 180sx FSM to determine your vacuum line routing. I know it's for the S13 SR, but it should be fine for the S14 Sr as well.

zerothread?id=305170

[kairojya]

Wait, you have two BOV's? Get rid of the stocker and use this guide that Hijacker translated from the J-spec 180sx FSM to determine your vacuum line routing. I know it's for the S13 SR, but it should be fine for the S14 Sr as well.

zerothread?id=305170

i'm not using both, at least from my knowledge. The vac line to the stock BOV isn't hooked up to anything. thanks for the link, i will be taking the stock one off and capping the loose ends soon.

[BoBa524]

When i bought my S14 Clip, it had an HKS BOV and the stock BOV connected to cold pipe but no vacuum going to it. Maybe its just a quick way of installing an aftermarket BOV in japan but to actually put a stock one in a swapped 240 with an aftermarket one...? just buy a cap for the cold pipe and tell me where you will buy it from cuz i still need one.

[homeslicej2]

No problem. I hope it helps you determine what to cap and what to use.

[duffman1278]

Wait, what??? A BOV under your dash!?!? I think you misnamed w/e is under the dash that you're talking abou, cause that would be pointless to have a BOV under the dash. Second, how's an N/A turbo'd? Third, your BOV vacuum line looks fine to me. Maybe just cracked vacuum line?

[brizanden]

to the op. Nice kouki wish i could help you, but looks like the other peps got it under control. also do you have the stock sideskirts or are those something else? cause they look diff but the pic is dark that low on the car. jw

[kairojya]

When i bought my S14 Clip, it had an HKS BOV and the stock BOV connected to cold pipe but no vacuum going to it. Maybe its just a quick way of installing an aftermarket BOV in japan but to actually put a stock one in a swapped 240 with an aftermarket one...? just buy a cap for the cold pipe and tell me where you will buy it from cuz i still need one.

k thanks

[kairojya]

No problem. I hope it helps you determine what to cap and what to use.

yep i saved that link for future reference

[kairojya]

Wait, what??? A BOV under your dash!?!? I think you misnamed w/e is under the dash that you're talking abou, cause that would be pointless to have a BOV under the dash. Second, how's an N/A turbo'd? Third, your BOV vacuum line looks fine to me. Maybe just cracked vacuum line?

I meant the fusebox in the engine bay, to the left of the intake manifold. When i referred to my friends Supra as an NA-T, that means that his is the base model N/A Supra with the 2JZ-GE motor, that he turbocharged. I've seen the term used plenty of times in reference to people turbocharging their KA24DE's, hence the name "KA-T".

I don't know what you mean about the cracked vacuum line, i didn't mean to say i have a noticeable problem or boost leak, i was just wondering why/if i should keep the stock BOV as it is, or get rid of it and close off those lines.

[kairojya]

to the op. Nice kouki wish i could help you, but looks like the other peps got it under control. also do you have the stock sideskirts or are those something else? cause they look diff but the pic is dark that low on the car. jw

Thanks! They are stock sideskirts at least to my knowledge, here's a couple more pics when i picked it up in NYC:

[homeslicej2]

I'm glad you saved it from that rust haven.

[idahotuner]

i spy a dodge colt haha.

[brizanden]

I'm glad you saved it from that rust haven.

r u saying the ne is bad for cars

[kairojya]

i spy a dodge colt haha.

actually it's a MINT 1989 Mitsubishi Mirage Turbo, has the 1G motor in it from the factory. It's fwd but my friend bought it from the original owner for $250 and the ***** is MINT, the only problem it had at that time was the return line from the turbo leaked 0_0!

neat little car i think

[jt15833]

haha that's funny, that mirage does look clean though.

My first car was a 1g talon I bought from a guy who also had a mirage. Loved dsm I guess.

The talon had 263awhp and was damn quick. I imagine the mirage could be faster as it looks quite light.

[homeslicej2]

r u saying the ne is bad for cars

[kairojya]

haha that's funny, that mirage does look clean though.

My first car was a 1g talon I bought from a guy who also had a mirage. Loved dsm I guess.

The talon had 263awhp and was damn quick. I imagine the mirage could be faster as it looks quite light.

Yea i found it pretty quick for a stock car from 1989, i think they must be very rare especially in that condition. I can't believe the guy only wanted $250 for it tho!! lol