GT28 for CA18

arno · Post by **arno** » Sat Apr 16, 2011 2:21 pm

djtreble wrote:Oh wait hold on, I thought you were talking about the T28...can you give me the full Garrett code for it (eg. GT2871R)

I did not purchase a garrett as they are pricey, I puchased the turbo from mr.turbo in Jetpark, here is the invoice description: GT28/T4 CW.54.2MM

The compresion wheel is 54MM and the standard one use to be 48MM if I am correct.

try and check link from facebook.

I hope this helps.
Thank you!

aep886 · Post by **aep886** » Sat Apr 16, 2011 2:45 pm

dont think this turbo is ball bearing... it journal bearing only...
i was thinking about this one not long ago...

plane^driver · Post by **plane^driver** » Sat Apr 16, 2011 4:59 pm

I think you should sell your t28 and buy one of my GT2871R ball bearing turbos!!

arno · Post by **arno** » Sun Apr 17, 2011 4:42 pm

Hi Guys, Has antyone managed to check the pic on facebook of the new vs old turbo ? I have fitted the turbo - I have lag and it only boosts 0.5 at peak revs ????
I will let it cool down and adjust the actuator and see what happens.

thanx!

arno · Post by **arno** » Sun Apr 17, 2011 8:07 pm

please see the link below for the turbo I purchased...

http://www.mrturbo.co.za/index.php?page ... t&Itemid=1

arno · Post by **arno** » Sun Apr 17, 2011 8:12 pm

djtreble wrote:Oh wait hold on, I thought you were talking about the T28...can you give me the full Garrett code for it (eg. GT2871R)

Hi Dj

please see the link below for the turbo I purchased...
It does not boost more than 0.5 at peak revs and there no boost at the bottom? is this turbo too large or have I done something wrong - everyone told me the turbo should work fine.....

http://www.mrturbo.co.za/index.php?page ... t&Itemid=1

Daniel · Post by **Daniel** » Sun Apr 17, 2011 8:41 pm

It looks as though it will work fine. Shouldn't have much more lag than standard. at what rpm do you reach full boost?

I suspect it has a .5 bar actuator. You should look at getting a boost controller, a manual bleed valve should work fine.

arno · Post by **arno** » Sun Apr 17, 2011 9:00 pm

Daniel wrote:It looks as though it will work fine. Should have much more lag than standard. at what rpm do you reach full boost?

I suspect it has a .5 bar actuator. You should look at getting a boost controller, a manual bleed valve should work fine.

It kicks in very very late, at about 5000rpm it starts to gain boost - the actuator is adjustable. I have no idea why the turbo is'nt boosting sooner - everyone told me it would work fine. I'm clueless. this was the only turbo that mr. turbo stock that would fit my standard exhaust outlet.

Daniel · Post by **Daniel** » Sun Apr 17, 2011 9:23 pm

5k rpm

holy smokes. is it possible to check if the wastegate is stuck open?

arno · Post by **arno** » Sun Apr 17, 2011 9:29 pm

Daniel wrote:5k rpm holy smokes. is it possible to check if the wastegate is stuck open?

Wastegate is properly closed with some tension on the actuator keeping it shut. it came to me as a shock when I drove it today and there was no power. verry dissapointed after all the labour....

rat · Post by **rat** » Sun Apr 17, 2011 9:41 pm

what is the housing sizes?

rat · Post by **rat** » Sun Apr 17, 2011 9:43 pm

you can always unplug the wastegate and see what happens just dont let it go over a bar

arno · Post by **arno** » Sun Apr 17, 2011 9:48 pm

rat wrote:what is the housing sizes?

COMPRESSOR HOUSING AR.60
COMPRESSOR WHEEL 54.2MM
TURBINE HOUSING AR.64
TURBINE WHEEL 46.9MM

poizen · Post by **poizen** » Sun Apr 17, 2011 9:51 pm

Compressor looks good but the exhaust is alil to big

You need a 0.48 to be like stock

arno · Post by **arno** » Sun Apr 17, 2011 9:57 pm

poizen wrote:Compressor looks good but the exhaust is alil to big

You need a 0.48 to be like stock

so that it why it's not spinning up then.......so it's too big.