Tuesday, March 22, 2011 - 03:50 pm, by: Adrian McGuire(Adro)
hi guys, im looking for some advice on how to get some more low end punch. at the moment i have the 1jz gte with a k27 single bitsa turbo lag monster which comes on around the 3500 -4000 mark. i also have a EMB and single straight though 3" exhaust and dump pipe. ive got a set of hks 264 cams sitting there aswell as some 440cc injectors ready to go in before my next tune but i was wondering if there is anything i can do (other than a smaller rear housing on the turbo)im willing to loose alittle uptop as its stupid quick up high anyway.what will give me more punch down low. any advice would be great. Thanks in advance.
Tuesday, March 22, 2011 - 05:56 pm, by: Adrian McGuire(Adro)
unsure as its the KKK turbo from the other thread, we decided to throw it on over the weekend and see how she goes. i have the gt35r with a AR70 rear and it looks simular sized maybe alittle smaller. it seems to have more top end though but its not dyno tested yet. the 35 has been on its way out for awhile she finally blew a seal the early last week which is why i put this one on until i get the blown one rebuilt.
Thursday, March 24, 2011 - 08:39 am, by: Adrian McGuire(Adro)
i did some testing on the way to work this morning. boost is starting to come on about 3200 rpm and it hit max boost (18PSI)by about 4400-4600 rpm. scott what size turbo are you running?
Thursday, March 24, 2011 - 12:52 pm, by: Scott Vim(1uz1jz)
It's the stock single turbo for the vvti. Hits about 14.5 psi (which is about the most you want to run on the single anyway) in any gear at about 2600rpm. Being a smallish single is does run out of puff up high. At about 6000 rpm it drops off to about 12psi and to about 11psi by 7000rpm.
But the torque down low is amazing. Its peak torque is at 2600rpm I have the dyno sheet somewhere from memory it's a whooping 400nm at the wheels. Because it drops off boost in the top range it's peak torque and power isn't as good as what it could be (209rwkw@5600rpm).
Thursday, March 24, 2011 - 03:18 pm, by: Andrew Duaso(Andrewd)
thats pretty damn good scott, i thought these small capacity turbos werent that good down low, a mate at work has a r34 and cant believe my ford makes more than 10psi @ 2000rpm, we had a small jog after work one day and couldnt believe whilst he was lagging i was long gone
Friday, March 25, 2011 - 03:39 am, by: Scott Vim(1uz1jz)
Nah small turbo is quicker to spool up but up in the higher rev range it can't push enough to keep it running 14psi so it drops off a bit. What Ford do you have?
Friday, March 25, 2011 - 10:09 am, by: Aaron Casey(Blownminiturbo)
Gt35r has 15psi at 4k on 2j My 3076r on 1j hit 12psi at 3100 and had push all way to redline. So was basically standard spool up with almost twice the power in the top end
Friday, March 25, 2011 - 10:35 am, by: Steven Anderson(Cusscuss)
Some more thoughts, the cams may make it worse, but if you have cam gears you should be able to reduce lag a little as well by playing with the exhaust side.
Friday, March 25, 2011 - 12:12 pm, by: Aaron Casey(Blownminiturbo)
yeah cams make your power range further up the rpm range. better with standard cams for lag but cams are better from about the time it hits boost and up. what is the a/r ratio on the turbo?
Friday, March 25, 2011 - 01:12 pm, by: Adrian McGuire(Adro)
unsure of the a/r ratio at the moment as there is nothing stamped on it that makes any sense. hopefully someone at the cruise on sunday will be able to point me in the right direction.
Friday, March 25, 2011 - 06:41 pm, by: Andrew Duaso(Andrewd)
scott i have a G6E turbo, stock small turbo 2009 model but its tuned
mine makes 14psi @ 2300rpm till 5000rpm then tapers off to 11psi, needs a stronger actuator (getting fitted soon) then will hold 16psi whole rev range but wastegate also needs to be ported, like i said its stock now, makes 10psi @2040rpm
tuner can make it hit even harder, but its pointless, 6spd auto short 1st and too much torque = wheelspin it starts making boost under 1500rpm, but honestly i might get it runed to come in a bit later as its annoying driving on light throttle just cruising and it doses when i back off @ 2000rpm it sounds stupid, when its really boosting it sounds unreal
Saturday, March 26, 2011 - 12:54 am, by: Scott Vim(1uz1jz)
Yeah xr6 turbo owns. For me it's alright because I have a manual so I don't build boost if I don't want to. 14psi at 2300rpm you'll probably be putting out more power and torque too.
i also had it off on the weekend when i was heat wrapping my dump pipe correctly and it has a number #11 on the inside of the rear housing apparently there is a chart somewhere that tells you the corrosponding AR size but i cant find it.
Monday, April 04, 2011 - 04:49 pm, by: Walter Gillmore(Cl33pa)
how about. get yourself a VNT turbo super quick spool and wont run out of puff bit expensive but it's an option. i am going to try this route myself using twin vnt turbo's
andrew a bit off topic but what power at the wheels does your G6E make on 14psi? just curious so i can get a figure to compare my xr6t build i did for a mate. also what other supporting mods have you done and price all up of mods? cheers.