Jump to content
SAU Community

Recommended Posts

Well i'm in the process of fitting a 26 in a C35 an getting some problems to pipe the stock blow offs back to the intake.

The OEM plastic cannot work because of the two 4" pipes i have for my CAI so i was thinking of using one greddy recirculating valve with some sort of 1" flexible hose back to the intake

The stock pipe where the stock blow offs come back into one is 2" and i just dont have space to run such a big flexible hose back to the intake either, not to mention i cant even get a flexible enough hose in that diameter to buy.

So my question is..... Why Gtrs use two blow offs even though they come back in to one commom pipe back to the intake?!?

And will it be a problem if i use one greddy recirculating valve(attached) instead???

post-42272-1241836898.jpg

Any help ASAP will be greatly appreciated

Link to comment
https://www.sau.com.au/forums/topic/269156-gtr-blow-off-valves/
Share on other sites

i believe bovs come from both sides of inercooler. to allow pressure to be released from inlet and outlet side of intercooler.

Possibly to create a more uniformly distrubuted release of pressure through your intake system? correct me if im wrong.

Ok

Ill be running stock turbos at 13-14psi. I was just wondering if this valve would be able to discharge the volume of air necessary to have the system working properly.

I noticed when i had this valve on the 25 it made the fluttering sound when releasing from small throttle openings....Was this compressor surge,or is it just the way these valves work?

Probably have to do something with the adjustment?

Thanks again.

i believe bovs come from both sides of inercooler. to allow pressure to be released from inlet and outlet side of intercooler.

Possibly to create a more uniformly distrubuted release of pressure through your intake system? correct me if im wrong.

yes you are wrong. both BOVs are mounted on a common pipe that is attached the outlet pipe of the intercooler. and then they have another Y pipe that joins their outlets and feeds it back to the intake.

you can use one, but that BOV will flow much less air than the factory set-up. why not just use the factory twins? they are good. otherwise if you wan Greddy use the type R. it's a much better unit than the cheap type S one you have pictured.

2x turbos = 2x airflow = 2x BOVs ...why they didnt just make one bigger one i dont know

but if your using those type s ones use two. ive seen them on the same pipe the stock ones are on so there are adapters to suit. (they sound stupid too just like the hks ones)

go a type R... i run one and they are good... dont go pssshhh or kaching... just a big venting/dump of air sound

exactly. to be honest 1 type S will be much worse than stock, and even two Type S will be certainly no better than stock, and possibly worse as they have a very small valve.

either keep the stock ones which are great, or get the type R one which is actually good. if you just want BOV noise then get some pods and a alluminium hard pip kit. at least it's actually beneficial as well as noisy.

one thing you guys missed is where he has said this... The OEM plastic cannot work because of the ""two 4" pipes i have for my CAI""

anyone say overkill on the cai.. get rid of one of those 4" pipes and run your piping how it should be with 2 stock gtr bov's or a trust type R bov.

Well after some fiddling,cutting,grinding and the use of some colorful words i got the oem valves to work.

I used some 2" air breeder hose and changed one of my 4" cai pipes to a 3"

Cant even hear the blow offs talk to each other right now cause i'm driving with just the front pipe alone. :P

post-42272-1242261276_thumb.jpg

looks good mate. best choice you could have made. I ran them on my old 32 GTR which had a full built motor, with serious headwork, cams, HKS turbos, power FC, 700cc injectors etc etc the full works and the stock BOVs handled the 20 odd psi pumping through them no problem.

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

    • i will be there 😁
    • Hello!  i just finished manual swaping my r34 skyline with a r33 rb20de box(RB71C)box  When the car is running it squeaks crazy loud and it was smoking from the gearbox area. The gearbox is fine it was tested. The clutch slave cylinder seems like it doesn't fully releases the clutch. I want to ask if this noise is from the throw out bearing or could it be the clutch assembly or disk att.xFliq87Gzw6kImKBVqDebXkj0fBqymk0JaYeP3_3SlM.mp4
    • A few small updates since the previous post and lessons. I decided to do a little interior light upgrade on the 110. I quite like the iilumo items, even if they're a bit of a premium over other brands. You'll also note the Stedi Fogs, that will go into the S15 fog lights as I needed to match the bulbs since I got the new ones earlier. I hope they fit as the body is quite a bit longer than your normal bulb.  Annoyingly, I managed to trip the fuse, which normally wouldn't be an issue until I located the fuse. I can't say I've ever come across this. I had lucked out that someone nearby had a spare, but oddly enough Toyota dealerships seem to keep this in stock. I ordered some to keep in my stash and as luck would have it, someone else nearby tripped the same fuse so I passed on the favour.  I also did a little service on the 110 ahead of some additional work coming up. It's been annoying that Goleby's stopped carrying this particular HKS filter for the 110, so now I need to keep them on order from Japan. I also took the opportunity to install a bash plate and number plate riser. The plate riser is such a cheap but nice fix to help really tidy up the car. I'm tempted to now also replace my headlights, on this car. Both items were from Project Aero.    I also needed to replace the rear tyres on the 110, and after trying to get it aligned learnt that I need to replace some bushes in the front end, so that's next.  Closing out this update with a nicer picture as always! 
    • Yeah mate, never miss it.
    • Any going to watch World Time Attack at SMSP this year?
×
×
  • Create New...