JDM 1998 Revision 5 GT turbo!! 403hp,360lb

[jimGTS]

another update

the weekend i decided it was time for a mini service....
change the oil and filter and some new copper plugs....
put in this new rebranded silkolene PRO S, called Tinan Race PRO S, went with 10W50......

before i got to work, i removed the plugs and did another compression test, i hadnt done one for a while;
179psi
180psi
180psi
182psi

basically 180psi across the board so i was a happy man!!!

new plugs in, BKR7E gapped to 0.7mm, time for the oil change...


i decided to remove my phoenix power oil cooler before the change, to not only free up the rear to show off my lovely new Apexi GT exhaust, but also didnt think i had the need for an oil cooler anymore, probably something more for folk who track the car....
removing the cooler was a bit of a mare, but eventually all came out...

really pleased with the look with the new exhaust WITHOUT the oil cooler in the way now, oil temps are only about 6-8C higher now, more in line to what i wanted.



i also fitted some new poly bush Gear linkage bushs from JSP!!! very nice bit of kit, pics are these next to my old uprated bushes....

then went for a 3hour B road drive!! awsome!

[fishy89]

love it

[Mike 'MR2' McHugh]

Some good work there with the exhaust and downpipe ! Looking good mate

[craig]

Car is awesome

Although I prefer the look of the Departure exhaust, the Apexi does look sweet. Better without the oil cooler.

Nice work Jim

[jimGTS]

Thanks all, it's coming along nicely.

A few more weight saving bits to come, maybe some more boost and see where were at then
Am always finding bits to do

[jimGTS]

not really an update, but thought id mention my small amount of weight saving in process

am due to get the scales out on a few things, namely the PP PRO i removed and oil cooler
fresh pic of the apexi GT


aircon rad removed along with the aircon receiver, this saved me a massive 4kg!! lol, and took me hours to remove as i couldnt take it out without removing the front bumper! PITA!



aircon compressor out also, am also going to remove all other aircon bits and pieces

[bri0905]

Fancy selling the oil cooler??

[RyanRs]

Exhaust looks nice bud Would have left the A/C in there tho. I reckon your next upgrade now should be to get rid of that laggy ass dinosaur turbo!! 3076 it ;D

[jimGTS]

Exhaust looks nice bud Would have left the A/C in there tho. I reckon your next upgrade now should be to get rid of that laggy ass dinosaur turbo!! 3076 it ;D

laggy compared to what??

only have to look at my graphs on 2bar site to see that isnt the case.....makes more power and torque through 95% of the rev range compared to the turbos your suggesting...

ryan at 2bar was extremely impressed with the spool and torque of this setup, all on a sidemount and low boost to.
may wona rethink that comment, lol.

area under the curve anyone

[RyanRs]

Well heres one example straight away, the first graph i looked at and tbh i was expecting this graph to be a lot laggier considering the turbo thats used!



^^ thats a GT3582r, i think its WHP but cannot be sure but even if it is FWHP, the spool matches yours until 4700 ish when the 35r takes off! Now imagine using a precision Billet 5852, HTA3582r, Borg warner of similar size etc, they in theory should all out spool a stock GT3582r and make the same, if not More power and torque!

Take a look at my graph of my Blitz K1-380 CT20 hybrid, yes my engine does have 141cc more capacity but mine also has 3" OD IC pipework ,BMIC with a huge 4" core and a beefy Q45TB + plenum which all adds to the lag. This was mapped at 1.5 bar with No gain added on the EBC so the wastegate was operating as lazy as hell.



I will scan for more later, but i certainly wouldn't say yours has fast spool!

[jimGTS]

Think your just underestimating the turbo dude.
Just cause it's old doesn't mean it can't perform well.

I'm not saying it spools like a stock turbo tho, lol.

Your graph on Ryans site is about the best graph on there, lol. So I'm not comparing it to yours considering your extensive crazy ass build. Also being a 2.1, boot mount, inlet mani upgrades, you can't tell me these dont help your results! It performs great with that blitz turbo.
Compare mine to every other graph on there in the same hp region, especially to the turbos your suggesting. Ie the examples I posted, I have a decent area under the curve in comparison, it's there in black and White. Same dyno, same gear.

I also have 2.75-3inch pipework btw.
Also alot of the graphs on the website have bmic or cc conversions, a cc on a dyno in particular is ment to help greatly, and is renound for getting good torque and spool up. However my setup has no problem out torquing alot of those and with less boost on a sidemount and a cat in the system.
Surely this has to be attributed to the turbo, as all other mods are similar.



You know like anyone else to not compare graphs to the US.
That graph is a 4th gear pull, ryans are all 3rd, so any 3rd gesr pull will be laggier than any 4th gear pull.
Anyway you know US always out spool and out hp all our graphs. Lol.

Compare like for like with same dyno and same gear, and you'll see it isn't to shabby.
You know there is a 252 Borg warner graph on Ryans site, my apexi matchs that for spool up almost identically, and that is new school turbo. It does out pace it after spool due to mine being a gen3, but still, most know a gen2 is quick spoiling due to it's design/head/cams.

Until I go on the quest for 500+hp, bmic, new inlet and tb, I'll stick with this setup for now, it's proven it performs pretty decent.

Paying 2k to make maybe another 30-50hp top end (6-7k) but loose out on a shed load of performance everywhere else in the rev range seems like the wrong way to go for a road car.

IMO.

[dawesy]

i dont find the rx6 that laggy TBH, also worth noting that it weighs nearly half of what a comparative sized garret does.
if these turbos are so archaic why do they fetch the prices they do?

[raptor95GTS]

you removed the air con, was it working before you removed?

[greeny]

Its hard to see on that graph but how's the numbers breakdown, i.e.

Where's it making 200/250/300/350 hp & torque etc?

[jimGTS]

Not sure how you can't see that on the graph?

Mines the red lines, every other graphs are black with the other setups.



Allen, yep aircon was working ok, just a bit down of aircon gas, so removed it.

[jimGTS]

Or just check page 6, tho that is 3rd gear pull unlike your rs tuning 4th gear pulls which will be better spoiling (more load in 4th).

[greeny]

Not sure how you can't see that on the graph?

Mines the red lines, every other graphs are black with the other setups.



Allen, yep aircon was working ok, just a bit down of aircon gas, so removed it.

Hard to see with all the other lines in the way!

But doesn't matter, ive just seen the original graph.

Have you played with the cams to try and get it to spool better?

[greeny]

Or just check page 6, tho that is 3rd gear pull unlike your rs tuning 4th gear pulls which will be better spoiling (more load in 4th).

Ha!

Just seen it as you'd posted!

3rd vs 4th gear will make a slight difference i guess, but so will starting the run @ 2/2.5k instead of 3.5k

Either way i wouldn't class it as majorly laggy.

The new GTX range of smaller turbos should be interesting once the results start to come out.

[jimGTS]

na not played with cams....
it was just mapped for how it came from japan once id sorted the cam timing...

+2 an -2... intake seeems a good number from what ive read/seen, but ive alot more scope for the exhaust cam, which alot run at -4 to -8, and seeing how its on the exhaust stoke, i can have a play around with these with my butt dyno, as shouldnt effect the map/afrs to much if at all....
i can play around with these on the weekends before i go for any sort of remap.

so i could gain some more spool and top end power for sure with a different ex cam setting.........

but as said spool really isnt as bad as some may think. is very comparable to the 3071 and the borg wanrer 252 (or is it 256), not sure on model number....
so certainly isnt T88 style, lol.

given the comparisons on ryans site, same gear, same dyno, it certainly shows its werth for spool/tq/ and hp....and with generally less boost and with no cc/bmic in the mix, it does ok for sue.

[Leakie Tbar]

its all xxxxx envy lads!! each to there own

so what if a turbo is laggy your obviously in the wrong gear lol

T78 for the win lol


K