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(Post Link) post #1 of 77 Old 26-06-13 Thread Starter
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147 JTDm 8v Hybrid turbo upgrade

Well after playing with most things on my car ive decided to upgrade the turbo, i was happy with the remap but as always you need a little more and before you say it yes id have been better off starting with a 16v 150bhp rather then the 8v but when i brought this car i had no real intention of doing anything other than wheels and some lowering springs but thx to this forum i now cant help myself...

So a few options came up, the choice i was going to go with was a plug and play gt2256v kit from JS JTD, but have decided to go with a 1756 hybrid less one off parts etc , the goal from this is the magic 200bhp which i should quite easily obtain, any more than this and i'll need to start looking at a bigger intercooler , better clutch etc so im trying not to go to far.

Here she is, a stage 2 hybrid from Adam Davidson at tdi turbos ,this wont go on unitll i have one final part a decat down pipe from JS tuning then it will get fitted and off to reddot for a remap
IMAG0193.jpg

147 JTDm 8v - RedDot remap - Stage 2 GT1756 Hybrid turbo - FMIC - JS & RAGAZZON Decat - - Eibachs - 4300k Hid's - 18" Multi's - Brembo 4 pot's .
189Bhp / 407Nm

Last edited by cree; 28-06-13 at 19:13.
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Lol it's never enough is it
Keep us updated on your progress.
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JS does a kit? :O where where where! my 16v needs this!
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(Post Link) post #4 of 77 Old 30-06-13 Thread Starter
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Send him a pm I'm sure he'll be able to do something for you.
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Are you going to request maximum power from Red dot, or limit to around 200bhp? Would be interesting to know what that turbo and the standard pump/injectors could reach.
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I may just to see what it can do, but as its my daily drive im not wanting to stress everything out and 200 should be ok with everything, i believe the fueling on my 120 8v jtdm is the same as the 150bhp models so fueling should be ok for what im after, also im not sure what sort of torque this will produce again im not looking for massive gains id be happy with 200Bhp/350lbft (maybe 210 but im not sure if these figures add up either. Also thinking of getting a FMIC before i get the remap but we'll see.
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Well, there is thread of Vic_O_O and his Grande Punto @250CV somewhere around. The same 8v multijet engine though.
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Interesting, I will have a look for it, btw do you happen to know what sort of power my clutch and gearbox won't be happy with yan.ko? I'm thinking more torque actually.
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I thought he had around 215, but then he disappeared? Maybe that was 215whp?
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Nope he made 249 just seen the thread ,I believe his turbo is bigger than mine but good to know that the 8v is ok to make 200+ bhp.
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Just seen it too, even posted on that thread so don't know where I got 215 from.

On my Astra, (same engine, different gearbox), the 350lbft at lowish rpm would probably cause clutch/dmf problems, but whether its say 200 or 230 bhp at higher rpm not so much.

You intending to dyno it when all done?
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I belive the 147 1.9 JTDm 8V has the same alfa gearbox as 16V, C530 and not the GM M32 one. So stock clutch will hold upto ~360Nm, gearbox about ~425Nm. Differential is the weak point, consider Q2/Quaife upgrade for more torque. Then the DMF doesn't like a lowdown torque a much. You'll need to make a torque build up more gradual rather than jumpy.
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So 200/350 max it is then, also yan.ko would it be ok to install a fmic after the remap?

And yes aidenb19 it will be on the rollers when it gets mapped.
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Little update the js tuning down pipe has arrived thank you joel plans have changed though and im going to get a FMIC before getting the remap, so im in the middle of choosing one.

IMAG0213.jpg
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The FMIC amd pipe kit has been ordered! maybe fit this next week (i copied mr draven ) and the turbo should be fitted by tomorrow hopefully, painfully slow....
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The hybrid and downpipe are finally on two manifold studs broke so they needed re-tapping and new ones put on..glad i never tried to fit it myself after all!!

The sound is alot louder whistle wise you can really hear the turbo spooling up nicely now, i quite like it, also i think this is due to the js downpipe which has made it seem to also spool quicker but wont see the real benefit until the remap and fmic.
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glad your almost sorted.
do you have the ability to log boost desired and actual? if so you may want to do a few logs of boost control before you get mapped as it may help save time during remap and also keep turbo safe until your mapped as especially with decatted exhaust you have potential for creep if you keep your foot in.
the logs revs, desired boost, actual boost and vnt will help the mapper when the time comes.
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unfortunately I don't, well I say that but tbh I wouldn't know what i would need.
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Keep us updated on the fmic, hope it goes well and if you need any info give a shout.
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Not to thread steal or anything, but is there a major plus for the JTDM 8v versus the old jtd 8v?
As in, able to archieve greater numbers?

Will be watching your build! got a jtd 8v (unijet) myself, currently sitting at 165hp/330nm torque with a euro 4 jtdm 16v turbo, fmic, 3 bar map, downpipe and cat replacement pipe. that's with 2550mbar of boost and 77mg/inj. For now enough, but i want to be looking towards 180-185hp somewhere. But i'm affraid that wont be possible without another turbo.
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I think the later models had the same injectors as the 16v so better fueling maybe some drivetrain updates I'm not sure maybe js can comment,

And thx Mr draven I no doubt will be sending a pm your way although I think you gave me enough info and pictures to buy everything but we will see
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Quote:
Originally Posted by cree View Post
I think the later models had the same injectors as the 16v
No, they don't, as 16V injectors are mounted under different angle.

Quote:
Originally Posted by thijsk89 View Post
Not to thread steal or anything, but is there a major plus for the JTDM 8v versus the old jtd 8v?
As in, able to archieve greater numbers?

Will be watching your build! got a jtd 8v (unijet) myself, currently sitting at 165hp/330nm torque with a euro 4 jtdm 16v turbo, fmic, 3 bar map, downpipe and cat replacement pipe. that's with 2550mbar of boost and 77mg/inj. For now enough, but i want to be looking towards 180-185hp somewhere. But i'm affraid that wont be possible without another turbo.
You should get nearly to these HP figures and 360Nm with that turbo.
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Quote:
Originally Posted by yan.ko View Post
No, they don't, as 16V injectors are mounted under different angle.

You should get nearly to these HP figures and 360Nm with that turbo.
Tuner tried injecting more fuel, but that didn't result in more hp. And i read that 2550mbar is ok, but going more like 2600mbar and above is pretty risky with these turbo's.

Other then the downpipe & cat replacement pipe everything is still stock. Getting a free flow exhaust system, with perhaps slightly bigger diameter might yield a few more horses but other then that i have no idea how to up it more.

Quote:
Time Engine speed Total fuel quantity Intake air quantity Boost pressure
sec rpm mg/i mg/i mBar
0 1295 25,7 596,6 1188
0,92 1336 46,64 683,2 1344
1,8 1430 48,41 720,6 1465
2,66 1493 50,81 824,6 1618
3,51 1621 60,84 934,8 1854
4,39 1734 67,75 1116,2 2189
5,27 1891 70,53 1256,9 2463
6,17 2050 72,85 1343,1 2606
7,02 2220 73,98 1280,4 2482
7,88 2381 75,39 1259,4 2405
8,74 2543 76,74 1345,2 2517
9,62 2704 78,73 1421,5 2651
10,47 2872 79,2 1388,6 2616
11,37 3035 79,45 1335,2 2542
12,24 3198 79,49 1330,5 2555
13,11 3351 79,37 1316,6 2574
13,96 3487 79,42 1307,4 2574
14,83 3623 79,2 1300,9 2571
15,7 3742 79,11 1284,2 2571
16,55 3855 78,74 1268,7 2565
17,43 3978 77,99 1258,4 2561
18,31 4084 77,83 1258,4 2577
19,18 4196 77,37 1258,4 2597
20,04 4296 75,9 1258,4 2590
20,89 4378 73,82 1258,4 2574
21,75 4462 72,01 1258,4 2536
22,62 4530 68,88 1258,4 2469
23,49 4608 65,22 1258,4 2383
24,36 4666 61,58 1258,4 2306
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Looks from thise figures you have too much air already with afr up in 19:1.
What sort if duration and timing is it running? If no increase with extra fuel maybe timing is stock , too late for extra duration?
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I have no idea, it's squadra tuning who did the tuning on the dyno. I trust him doing the right thing.
but i cannot log duration and timing myself via multiecuscan right?
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