Jump to content
SAU Community

Recommended Posts

Hey guys.

My M35 seems to be farting when under full boost at around 3-4000rpm. I remember reading about people saying it was either an exhaust leak or an issue with the BOV.

Has anyone found a fix for the farting? I remember reading about someone ordering a new BOV but never heard the outcome..

I was wondering if a stock R32/33/34 GT-R BOV would bolt strait on as a replacement of the stock BOV?

Cheers! icon_e_smile.gif

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/
Share on other sites

Hey guys.

My M35 seems to be farting when under full boost at around 3-4000rpm. I remember reading about people saying it was either an exhaust leak or an issue with the BOV.

Has anyone found a fix for the farting? I remember reading about someone ordering a new BOV but never heard the outcome..

I was wondering if a stock R32/33/34 GT-R BOV would bolt strait on as a replacement of the stock BOV?

Cheers! icon_e_smile.gif

Hey Chris,

I would doubt compatibility of any R Skyline BOV due to the VQ engine. I could be incorrect but I doubt they would be a straight bolt on.

I was looking into a TurboSmart Dual Port BOV but I've put it off until the ECU's are remappable and the highflow turbo project get's underway.

I'm trying to think off the top of my head who may have done an M35 BOV replacement and the only one I can think of has sold his Stagea and downgraded to a Lexus or something like that LOL

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5333493
Share on other sites

I can't confirm 100% but I was just reading something on Turbosmart and it may be fact that the Dual Port will NOT fit the vq25det with the trumpet fitted, so either drop the trumpet or opt for the Kompact Dual Port.

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5333733
Share on other sites

Hey guys.

My M35 seems to be farting when under full boost at around 3-4000rpm. I remember reading about people saying it was either an exhaust leak or an issue with the BOV.

Has anyone found a fix for the farting? I remember reading about someone ordering a new BOV but never heard the outcome..

I was wondering if a stock R32/33/34 GT-R BOV would bolt strait on as a replacement of the stock BOV?

Cheers! icon_e_smile.gif

Hey that was me with the farting stagea,

I was told it was most likely an issue with the bov, I've ordered a new Nissan one ($250) and was going get it fitted this week...... until the top tank on my radiator split.....

So once I get my car back and get the BOV fitted I'll let you know. It's been a pretty long process and I'm hoping to get it all sorted before I drive to QLD at the end of the month.

Cheers.

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5334151
Share on other sites

I doubt it will be the bov, more chance one of the cooler hoses has split or the exhaust manifold is leaking.

+1 :laugh:

Chris, if you really want to go with an aftermarket BOV, perhaps look at the Greddy RZ unit?

It can be used either venting to atmosphere :laugh: or plumb back :laugh: and is good for up to a claimed 400hp.

If you plan to go with more power, perhaps the HKS SSQV unit?

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5334930
Share on other sites

I don't see how it's the BOV. They are closed under pressure when they aren't operating so how can they leak!? Doesn't really make sense that it can be doing the exact opposite of its intended purpose even without a spring at all the pressure would still keep it closed under power.

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5335060
Share on other sites

Hey that was me with the farting stagea,

I was told it was most likely an issue with the bov, I've ordered a new Nissan one ($250) and was going get it fitted this week...... until the top tank on my radiator split.....

So once I get my car back and get the BOV fitted I'll let you know. It's been a pretty long process and I'm hoping to get it all sorted before I drive to QLD at the end of the month.

Cheers.

Let me know how you end up going!

+1 :D

Chris, if you really want to go with an aftermarket BOV, perhaps look at the Greddy RZ unit?

It can be used either venting to atmosphere :) or plumb back :) and is good for up to a claimed 400hp.

If you plan to go with more power, perhaps the HKS SSQV unit?

I will look further into it. Cheers.

I don't see how it's the BOV. They are closed under pressure when they aren't operating so how can they leak!? Doesn't really make sense that it can be doing the exact opposite of its intended purpose even without a spring at all the pressure would still keep it closed under power.

It seems to make the farting noise once I am on peak boost and then lift off the throttle or once it shifts. I can keep the farting going if I feather the throttle... So I was thinking its either the exhaust or BOV.

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5335584
Share on other sites

I just rang Turbosmart to get the low-down on what the most suitable BOV is for the M35.

The Kompact Plumb Back - Nissan (TS-0203-1226) is suitable for the stock ceramic turbo and for a GCG Highflow PROVIDING you don't turn up the boost. So that is pretty much a no go for those who wish to dial up the power output in regards to PSI.

The best option for a higher PSI is the Nissan Dual Port (TS-0205-1026), as mentioned earlier you cannot run the trumpet due to the restricted space, it is recommended you don't have the trumpet on and block the outlet (Turbosmart have a Port Blanking Plug that does the job). The unit would have to operate as 100% Plumb Back (which was what I'm after anyway).

I've just had a quick look on the net and the pricing is around $460.00 for the Nissan Dual Port.

If anyone can offer any feedback on the Nissan Dual Port please do :)

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5335655
Share on other sites

When they say don't turn up the boost, do they realise we run 1 bar stock? Stock bov is running strong on mine, over 6 months of hard 20psi driving.

They were surprised when I told them what the stock turbo puts out, as soon as I said I would be looking to tune to about 18 - 20psi they stated the kompact unit wouldn't be suitable.

I probably would've gone for the bigger unit anyway but I just wanted to suss it out.

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5335734
Share on other sites

I wonder if the "farting" sound you mention. does it come from over near the passenger side?

I wondering if it is the Wastegate on the turbo blowing open?

I have had it open at times on peak boost (but on mie it was getting suck open until I swapped the solenoid out) and it sounds like a farting noise and boost is limited to 9psi when it does this.

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5336016
Share on other sites

Mine makes the farting noise occasionally, but not very often. What I have noticed is that there is no change in the boost guage when it does happen - which to me would indicate its not a cooler clamp, or BOV but more likely manifold or exhaust...?

Either way its the same sound as in spoolin's car as I have been car for the same noise.

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5336242
Share on other sites

Here is what I have found;

I blocked off the BOV with some rubber and went for a 45min drive to try and make it 'fart'. No farting at all. I get back home and return the BOV to stock - took it for another drive and it farts again.

Here is a quick iPhone recording HERE listen at 15seconds.

Link to comment
https://www.sau.com.au/forums/topic/327936-m35-bov/#findComment-5337413
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • jeebus. glad you weren't under it while performing the stunt. Also thanks for the link to the wheel measurer, exactly what I needed
    • In the older stuff there were very significant differences 2wd to 4wd, for example Stagea had strut front end for 2wd and double wishbone for 4wd so it was not minor to swap. From poking around the 2wd v37, it *looks* like it might be more possible; some of the parts specifically have "2wd" stamped on them which suggests the platforms are more similar. You'd still want to start with a 4wd half cut to swap stuff from though. I'd suggest if you don't have a tune on the ECU you don't really need one on the trans either. Throttle mapping is in the ECU side (and you can always use a Roar Pedal if you want the throttle to actually respond to your foot), and really if you are happy with the stock power you probably accept the stock trans behaviour too....its all made to be "sporty" not racey.
    • So, updates. I have not washed the car since it came back from Tassie. I've driven it around a bit but not got around to actually sorting it out. I DID raise it because I cracked the rear bar leaving a hotel which was very distressing. Interestingly, the car drives more compliant now that it's raised a fair bit (5mm front, 15mm rear). Also noticed that my FR height was 10mm lower than FL. So that's now sorted out, too. I also bought this and had it printed: https://www.etsy.com/au/listing/1576422240/wheel-and-tire-fitment-tool-universal?ref=shop_home_feat_1&dd=1&logging_key=08f604d9fa4cc383550ba985e6ac85cd5cac7fbb%3A1576422240 Now, if I was smart I would have taken my brake calipers off to actually use this correctly but it was evident enough to me that in the region where the caliper was... there was nothing to hit suspension/guard/arm wise. So I'm going with "it'll be fine" after using the tool to hopefully very precisely measure the wheel clearance. Also while doing this, I had the very VERY bad idea of jacking one of the wheels/suspension arms up while the rest of the car was on jack stands. I did this to see how the arm would travel. This all was well and good until the car slid off the stands and went through a fence. So don't do that. Incredibly nobody was hurt and there was only minor damage to the rear bumper as the car didn't have far to slide, and had 3-4 wheels on it. The only damage turned out to be the fence itself which was easy to fix, and a little bit of damage to the fibreglass rear bumper trim. I had already planned to try a touch up paint kit to fix the time I drove into my garage door to see if it'd help in the interim before I get it fixed properly. I used the Dr Colorchip kit after looking online and seeing everyone talking about it. Yes it's made for chips and not huge broken missing pieces and I'll be 500% recommending it for stone chips after using it for stupid things like me. This took about ... 10 minutes and looking at the half assed photo the 30 second job I did on the bumper corner was almost perfect just by using the tiny little brush and painting it in. The sealact stuff to remove over-painting is really useful, so if/when I do it again I'll likely slather the touch up paint well over it and then clean it up with the cleaning solution. The wheels should arrive in a couple of weeks. I am still kinda confident after doing a stupid amount of measuring (and borrowing a set of 18x10.5+15) that they will not fit because I overlooked something, somehow and flew too close to the sun. ALSO R34 GTR guard liners do not fit on a GTT. I bought the undertray brake duct guides and had the wonderful problem of them not fitting my intake, my oil cooler and the liners themselves were even worse. Attempting to fit them won't work in general - You would have to cut them up as another poster mentioned as the bodywork is different on the GTT. At least I can try to resell them. So instead of cutting those up, I cut up my old already-cut-up GTT liners and extended them by using some PP plastic and drilling some 8mm holes for some nissan clips for the 'extra' bit. Because I was happy to cut them I was able to mount them pretty damn forward so I now have some semblance of guard liners, and the brake vents seal the bumper from the bottom. It sort-of-looks like this, to give some idea - If you look at the GTR and then the GTT this is when I realised that I needed to seriously measure as the inside of the rim area is entirely, entirely, entirely different and could not take any internet measurements for granted.   
    • If you are Ecutek tuned then these TCU tunes are anywhere from $550 to $700 usd. If you are not ECUTEK tuned, then it gets costly!    
    • Sorry to hear your HFM BM57 was faulty,  did you contact HFM I would hope they would be at least grateful for the information if there was some sort of manufacturing fault, you would hope they would be sympathetic even if your item was 2 years old if it had never been fitted. May I ask where it leaked from ?
×
×
  • Create New...