Jump to content
SAU Community

Recommended Posts

I have just recieved my ARC intercooler for my R33 GTR. The kit comes with piping and also some solid plugs to fit into the BOV lines. I am not sure if I should be installing after market BOV's or not. Will the Lack of BOV's cause issues?? Or is the a ploy by ARC to increase engine response...from what I can see the twin entry piping will not fit with the BOV return line.

Matt

ARC.php.jpg

post-2338-1146723432.jpg

Edited by BOOSTD
Link to comment
https://www.sau.com.au/forums/topic/116354-arc-twin-entry-intercooler/
Share on other sites

you dont need to use that side's (the BOV side) piping. you could still use the standard one and then you wont have to worry about having to change BOV's or blocking it off. Personally, i would keep the stock ones on.

Not sure if I follow you guys. The ARC cooler kit has twin inlets. The associated piping has to have the BOV return pipe reomoved to fit. (from the two inlet pipes after the AFM's) Also the return BOV plastic pipe behind the intercooler has to be removed as the angle ARC have set the intercooler on is pretty large.(leaning forward)

I just finished installing my ARC intercooler. My initial impession was a massive increase in low to midrange and much sharper throttle response. After further investigation I found the car was running significantly lower boost but no loss in power. I put this down to much less restriction from the intercooler....which is what ARC are all about. At .6 bar in first and second the car spins up all 4 and changes lanes by itself. I haven't loaded it up in any other gear as the tuning is all up to sh$T now. I can't wait for another dyno run so I can over lap the two.

Conclusion <ARC are GODS>

PS this cooler replaced a TRUST item of same thickness

... if you're measuring _after_ the cooler, a lower pressure drop across the cooler due to restriction

should theoretically see a pressure _increase_ at the measurement point (i.e. higher boost) all other

things being equal. So in theory, your newer cooler could be a larger restriction, resulting in lower

displayed boost at the plenum.

All other things, of course, aren't equal. If the cooler is cooling better, you should have denser air

at the measurement point - lower volume - lower boost, all other things being equal (they aren't :)).

I'd guess that this is what's happened - did you happen to take any temp readings before/after the change?

ARC have a good rep for a good reason; shame their kit's so expensive.

Regards,

Saliya

Im confused?????

I understand that a better flowing core will flow more at less boost but you said you didnt touch the boost setting, or thats what I assumed. So from your theory, if you got an even better flowing core than this one boost would drop again without touching the settings? And that if you removed the core and ran a straight pipe boost would lower by itself again?

Transversely, if you fitted a restrictor with a 5mm opening your boost pressure would rise dramatically without adjusting settings according to your reasoning. Is that what your saying?

I thought what Roy thought and that if your new cooler flowed better that pressure would rise on its own and you would have to adjust it lower.

... if you're measuring _after_ the cooler, a lower pressure drop across the cooler due to restriction

should theoretically see a pressure _increase_ at the measurement point (i.e. higher boost) all other

things being equal. So in theory, your newer cooler could be a larger restriction, resulting in lower

displayed boost at the plenum.

This is exactly what i was thinking. As others have stated, less restriction in the I/C, will results in a higher boost level

less restriction means you can put more air through the piping and engine with less work in the turbo, so the more boost is capable. 8psi in a normal I/C flows less air then 8psi in a high flow situation. This is the same with stock turbos and higflow turbos.

boost is measured at the plenum.

boostd is a measurement of restriction, flow is what makes power. The cooler flows the same at less boost

I think we are missing part of the equation. You havent touched your boost settting. So say before they were pumping out 14psi measured at your inlet plenum. With the std cooler you may have had say a 2psi pressure drop. You may have foud that if you measured boost at the turbo outlet before the intercooler then you may have actually been running 16psi...only because of the pressure drop your engien never saw that boost level.

So you install a better flowing intercooler...so now that 16psi your turbos were having to pump out to see 14psi at the plenum will be more likely seen at the plenum. So that would mean more boost at the plenum.

So something isnt right

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

    • Well, all the best with the new camry It was interesting to hear about the UK process, it is generally a lot more streamlined here with a shipping agent looking after all the import side (noting the exact final price can still be a surprise.....) and I've used a few different brokers on the japan (or US) side, and never had any trouble with any of them....luck of the draw I guess. You mentioned you didn't get the auction sheet (understandable since you bought it from a dealer, not auction), but I always try and get hold of that because they are pretty thorough. I've imported 2x R grade vehicles over the years and both were fine, repairs in Japan are pretty thorough compared to here in Oz.
    • BTW I measured the jack I have, it is 70mm at the saddle but you only have about 700 until it returns to 150mm high at the cylinder so it is good but no magic bullet.
    • My experience with Rising Sun Exports Before agreeing to the sale I tried to do as much research as I could (obviously), his Facebook reviews are 98% and he goes Live at least once or twice a week. I contacted 2 people in the UK who had used him for their imports, both had positive feedback. His explanation and talk through of the import process was thorough, answering any query no matter how stupid it was. It felt as soon as the money was sent, communication dropped off. I asked for shipping updates every 2 weeks or so, not wanting to pester him, he never had any updates. I wasn't informed the car had been dropped off at the port, I only found out by his Facebook story. I asked for the photos taken at the port, knowing he would need some for insurance purposes. I received a few 5 second clips and that's it. When asked again, he said his staff had them. Weeks later I asked again, he tells me he doesn't have any, but does have 50 photos from the original advert. I never received them. I eventually got the documents sent via WhatsApp after I mentioned the port was requesting them. I purchased a CarVX report, to find out the vehicle is a Grade R with recorded accident damage, first recorded in 2017 when it was first auctioned. He never told me the grade, then again I didn't ask. His response was "Grade R means nothing, it wasn't chassis damage". Still, I would have liked to have been informed about it. Jon prides himself on being open and honest when it comes to inspecting cars, it's his main job doing so at the auctions for customers. When the vehicle arrived in the UK I noticed a few little cosmetic issues. It's a 21 year old car so it wasn't going to be mint condition. The side skirts are cracked on each corner and the sealant is failing. The front grill on the bonnet/hood isn't secured very well, mounting studs are missing. Both minor things, but again, it would have been nice to be told. During a Facebook Live walk around video of the vehicle, he mentioned it has a front Whiteline anti roll bar/sway bar. While on the inspection ramp, I noticed the stock item has been installed. When first questioned, his response was "the ARB? Switched? Since when, it never had them". Since sending video and photo evidence I've not received a response. I'm probably being over critical of the overall condition of an old car, but all I wanted was honesty (which he claims to have). I'm aware I wasn't his only customer, he's busy doing XYZ but other reviews praise him for great communication with regular updates and photos, I felt I didn't receive the same treatment. 
    • I was able to get some underside photos while the car was on the ramp The suspension is all Altezza/IS200/IS300 so getting part's will hopefully be less of a headache
    • Welcome to my 2004 Toyota Mark ii IR-V Fortuna (series 2) With a 1JZ-GTE powerplant under the bonnet (hood) it'll give me plenty of scope for power upgrades. For those who aren't familiar with imports, the 1JZ-GTE is a 2.5L 6 cylinder VVTi engine with a single turbocharger. This has the factory R154 5 speed gearbox, along with a aftermarket 2 way LSD differential (brand unknown). Under the arches are a set of CST Zero 1 alloys, 18x9 +30 225/40 up front and 18x9.5 +15 265/35 on the rear. The car was quite low in Japan and there's evidence of the wheels catching the rolled arches/fenders. The tyre's aren't great so I'm in two minds whether to replace both or just the tyres and put up with the wider wheels on the rear. The car still uses stock brakes with the addition of some braided hoses. The exterior is stock with the exception of a BN Sports front bumper and a replacement Fortuna grill  Moving to the interior, the steering wheel has been replaced with a dished MOMO steering wheel (which will get swapped for my Momo Tuner for the time being) Defi Link Gauges are mounted above the climate controls and on the A pillar, the Oil Temp,Oil Pressure,Water Temp and Boost gauges should help with spirited and track driving  The stock seats have been replaced with some retrimmed Recaro bucket seats. Being a larger build these are a little snug, unfortunately the orange isn't for me so I'll look into replacing these down the line. Other modifications include a twin plate clutch, Blitz intercooler, Evolve alloy radiator, a stainless exhaust with decat, HKS EVC-S boost controller and coil overs
×
×
  • Create New...