View Full Version : lookin for new turbo
ok ive got a t2 with t25 comp wheel fitted which i believe to be the same spec as ktec180 and want somethin abit more special, i use the car nearlly every day so dont want anythin ott,
answers on a postcard???? :)
hi mate i use my car every day too im running the t28/t3 roller bareing on mine. if you can afford to go this far i would go for one. they are great. :D
Markey Mark (BD)
14-07-2010, 15:11
ok ive got a t2 with t25 comp wheel fitted which i believe to be the same spec as ktec180 and want somethin abit more special, i use the car nearlly every day so dont want anythin ott,
answers on a postcard???? :)
The turbo you go for will depend on what spec the rest of your engine is and how you use the car. Do you want it responsive or all power?
Im looking for something also.
I need something to match well with standard cam.
Any suggestions?
phase i 16 v turbo
14-07-2010, 16:09
I have just collected a ktec180.
Markey Mark (BD)
14-07-2010, 16:11
Im looking for something also.
I need something to match well with standard cam.
Any suggestions?
What you using car for?
What boost you intending to run?
ok ive got a t2 with t25 comp wheel fitted which i believe to be the same spec as ktec180 and want somethin abit more special, i use the car nearlly every day so dont want anythin ott,
answers on a postcard???? :)
your turbo will need to match the rest of your car ie fueling FMIC etc so more info please :)
its runnin standard cam, carb and internals at the moment, fitted a mocal oil cooler and ive got a cossy fmic waitin to go on, a massive jr cone filter, waitin for a sidey off lamps,
would like it to stike between responsive and power if possible, lamps has got a t3 and i think its abit to much, i like how it pulls but dont want it to spin up in every gear ;);)
dave j gtt
14-07-2010, 23:21
Im looking for something also.
I need something to match well with standard cam.
Any suggestions?
Me too :crap: cant make my mind up :coffee:
What power is standard cam good for? Also which larger turbo suits standard cam ?
Markey Mark (BD)
15-07-2010, 15:37
For standard cam and moderate boost i would go for T2/T25 combination, ideal for the road as still gives good response being a T2 on the turbine side.
For standard cam and moderate boost i would go for T2/T25 combination, ideal for the road as still gives good response being a T2 on the turbine side.
:agree:
with standard carb you wont be able to run above 14/15 psi anyways mate you need to look at the bigger picture if ya want more BBOOOSSSTTT.....:cooter:
i would stick with T25 if you want responsive or go down the VNT route :)
having had a few differnt turbos,, id say T25 is the most ideal sizefor the 5..
I've gota 285 cam and followers to go on with a port and polished head with inlet manifold to match, got a spare carb to rebuild to any spec to suit the turbo. Not gona use it for daily driver so it can be more powerful now, what turbo shall I go for, maybe t28 or full t25? And what shall I do to carb?
Either the T28 or a full T25 will work well with the 285 cam, obviously the T28 will be a tad laggier and full boost a tad later than the t25 in the rev range.
You got a wideband AFR kit??
No not yet, I'd like one but don't no which one is best for sub £200, heard the ones efi parts scoff sells are best?
Will there be much difference between t25 and t28 apart from t28 comin on later?
No not yet, I'd like one but don't no which one is best for sub £200, heard the ones efi parts scoff sells are best?
Will there be much difference between t25 and t28 apart from t28 comin on later?
As you say get one from Scoff either the AEM or the Zeitronix kit. I use the AEM kit and have no complaints with it but the Zeitronix kit has alot more functions and can read other things aswell like, boost, egt's, revs', etc.. were the AEM is purely a wideband kit only.
With ref to differences in T28 and T25 turbo's I suppose it is all down to size of the housings and wheels used, but in general the T28 will obviously flow more air than the T25 purely due to the size of the compressor housing, the T28 compressor housing will be a T3 front and the rear housing will be something like a T25 .49 rear hence the T28 nameing as it's a mixture of the 2 different turbo's the core will more than likely be a T25 type.
From what I have heard the T25 with a .49 rear will have full boost by about 3500rpm's and the T28 will be about 4000-4500 rpm again cam choice will also effect this.( or was that will spool from 3500rpm on the T25 and spool from 4000-4500rpm on the T28:scratch:)
Hopefully someone with a T25 and 285 cam will advise and the same with the T28 and a 285 cam hopefully someone with these combo's will priovide some info:agree:
As you say get one from Scoff either the AEM or the Zeitronix kit. I use the AEM kit and have no complaints with it but the Zeitronix kit has alot more functions and can read other things aswell like, boost, egt's, revs', etc.. were the AEM is purely a wideband kit only.
With ref to differences in T28 and T25 turbo's I suppose it is all down to size of the housings and wheels used, but in general the T28 will obviously flow more air than the T25 purely due to the size of the compressor housing, the T28 compressor housing will be a T3 front and the rear housing will be something like a T25 .49 rear hence the T28 nameing as it's a mixture of the 2 different turbo's the core will more than likely be a T25 type.
From what I have heard the T25 with a .49 rear will have full boost by about 3500rpm's and the T28 will be about 4000-4500 rpm again cam choice will also effect this.
This is what I have and its the dogs danglies... love it to bits!!! I did have a Tomcat T25 which is a damn good cheap turbo :)
So if a t28 is t3 front and t25 back is there such thing as a full t28?
once I no which one to go for outa the t25 and t28, who's the best person to contact to get one, still Adam l?
So if a t28 is t3 front and t25 back is there such thing as a full t28?
once I no which one to go for outa the t25 and t28, who's the best person to contact to get one, still Adam l?
Adam L @ Turbo developments is very good and I have one of there VNT turbo's and recomend them:agree:. I know 5tevel in the past ran a full T25 with .49 rear housing and a piper 285 cam combo and made 207bhp @ track n road in essex I know he went up the strip with this setup but can't remeber his time but it back up the rolling road printout figures.
Personally T28 just seems to laggy for me on a C1J I would go for the full T25.
BluntyR5GTT
12-01-2011, 16:28
as said for the road either a nice specced t25/t2 or a full t25 is your best bet
Markey Mark (BD)
12-01-2011, 16:58
Can i ask why people think T28's are too laggy?
newbstar*
12-01-2011, 18:04
Can i ask why people think T28's are too laggy?
I was thinking the same The t28 rollerbearing i used was my favourite, vnt was also good apart from the spikes. Had fully worked t25s, they just dont make the grade.Saying That, gt25r :smokin:
d110rkjste
12-01-2011, 18:17
I was thinking the same The t28 rollerbearing i used was my favourite, vnt was also good apart from the spikes. Had fully worked t25s, they just dont make the grade.Saying That, gt25r :smokin:
im hoping for good results with my gt28rb an 300 cam
Can i ask why people think T28's are too laggy?
For me it's the waiting waiting and some more waiting then bang she's at full boost with the t28 I like the early boost in the rev range. Were as the Vnt gives me the early boost and big turbo power and I now also have no boost spikes at all with the Vnt :)
BluntyR5GTT
12-01-2011, 18:35
out of interest how much earlier does a rollerbearing t28 hit full boost than a normal t28
Markey Mark (BD)
12-01-2011, 18:49
im hoping for good results with my gt28rb an 300 cam
You intending on running abit of boost on that set up?
Markey Mark (BD)
12-01-2011, 18:51
For me it's the waiting waiting and some more waiting then bang she's at full boost with the t28 I like the early boost in the rev range. Were as the Vnt gives me the early boost and big turbo power and I now also have no boost spikes at all with the Vnt :)
Thing is with the T28 i have for example (on the old campus) it use's a T25 rear end (.49 AR with 200SX wheel) so there will be no difference of spool up between my T28 and a full T25 with same size rear on there.
d110rkjste
12-01-2011, 18:53
You intending on running abit of boost on that set up?
yeah crazy boost . im only gonna be usin it as a toy weekends, santa pod.
Markey Mark (BD)
12-01-2011, 18:55
yeah crazy boost . im only gonna be usin it as a toy weekends, santa pod.
From what i remember/heard the 300 cam has a fair bit of overlap so not really suited to big boost.
Prob better off with 285 in there.
d110rkjste
12-01-2011, 19:01
yeah crazy boost . im only gonna be usin it as a toy weekends, santa pod.
to be honest i cant even tell you, i put the engine in last year and never got round to driving it. an i hope your wrong! but will bare that in mind. just looked at the blue 5 u had. what bhp that have? looks fairly tuned. like the intercooler. i thought the skyline 1 i had was big
Markey Mark (BD)
12-01-2011, 19:03
to be honest i cant even tell you, i put the engine in last year and never got round to driving it. an i hope your wrong! but will bare that in mind. just looked at the blue 5 u had. what bhp that have? looks fairly tuned. like the intercooler. i thought the skyline 1 i had was big
The blue 5 i had was about 230-240bhp mate, thats was over 5yrs ago now.
d110rkjste
12-01-2011, 19:07
The blue 5 i had was about 230-240bhp mate, thats was over 5yrs ago now.
im hoping i can get around that mark. only got another 5 because a mate of mine bought a cossy, an said no 5 would beat it. so i raided the bank! hope it does now
Markey Mark (BD)
12-01-2011, 19:37
im hoping i can get around that mark. only got another 5 because a mate of mine bought a cossy, an said no 5 would beat it. so i raided the bank! hope it does now
You don't have to spend alot for that sort of power mate. ;)
d110rkjste
12-01-2011, 19:42
You don't have to spend alot for that sort of power mate. ;)
ooops, ive spent a good 6k on the engine!
TrixNFlix
12-01-2011, 20:04
ooops, ive spent a good 6k on the engine!
:eek: :scared:
The blue 5 i had was about 230-240bhp mate, thats was over 5yrs ago now.
So what did your blue 5 have done to get that figure?
Markey Mark (BD)
13-01-2011, 16:49
So what did your blue 5 have done to get that figure?
It was my old high comp engine, ran 8.1:1. Had cam, head work, slotted flywheel, rejetted carb and VNT. Done pod in 12.3@11mph. For me head work wasn't totally neccessarily for that engine in the end but at time thought try it.
My campus engine was standard comp, lightened flywheel, cam, standard head and rejetted carb on T28 and that was about 220bhp, done pod in 12.6@108mph.
My campus engine was standard comp, lightened flywheel, cam, standard head and rejetted carb on T28 and that was about 220bhp, done pod in 12.6@108mph.
:D Lightened flywheel and cam is on my list then. That's impressive.
Mark, further to my above comment, was the engine standard internally? i.e. std pistons/liners etc. Only when i was talking about power above 180bhp people warned me that the liners would not take much more power.
Markey Mark (BD)
13-01-2011, 17:23
Yep on both engines they used standard liners and pistons.
Only difference with the high comp engine is the pistons were flat topped.
The engine from the campus now is slightly different spec as it had refresh but its sold now so not tested it properly but does feel good, new owner will like it.
SCHWARTZ
13-01-2011, 17:24
the liners will take more if everything is set up correctly
That's the problem near me, none of the local rolling roads give me the faith to set it up properly, plus i don't have a wideband. I'm holding on to some offers from some friendly folk Swindon way ;)
Markey Mark (BD)
13-01-2011, 17:34
That's the problem near me, none of the local rolling roads give me the faith to set it up properly, plus i don't have a wideband. I'm holding on to some offers from some friendly folk Swindon way ;)
I'm about an hour from swindon if you ever get stuck ;)
Spooky is Swindon way, he knows what he's looking at might be worth seeing if he could help you out little.
Penfold aka The Dealer
13-01-2011, 17:59
I was thinking the same The t28 rollerbearing i used was my favourite, vnt was also good apart from the spikes. Had fully worked t25s, they just dont make the grade.Saying That, gt25r :smokin:
Thats what I have, just got to fit it. :)
Spooky is my man already, came with an offer from Kris M at the same time. Just ran out of time last year.
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