Improving performance of a 13B-T

Post by **gogo** » Sun Jul 15, 2007 3:21 pm

I am contemplating upgrading my 13B-T to give her a little more woomph.

Right now its pretty stock standard as from the factory.

Here's a list of mods I want to do, so any comments most welcome:

1. Change out factory C26 turbo for a C28 unit.
2. Add an intercooler, I think front mount would be best.
3. Put a bigger spring in the fuel pump and do the injector at the same time.

and..

Should I bore out the block to a bigger cc? Presently its 3.4 but reckon should goto to 3.7.

Well hope to see a few comments.

good day.

Post by **plowy** » Sun Jul 15, 2007 4:34 pm

if u can get hold of him speak to dumbdunce on here he is a wiz with any cruizer

Post by **gogo** » Sun Jul 15, 2007 7:42 pm

My mate reckons I can easily run 20psi boost if I mod the engine a little.

Is a safari turbo worth going for?

Post by **plowy** » Sun Jul 15, 2007 8:35 pm

dts turbos ran about 9 psi standard ,not sure how it will handle 20 psi tho

Post by **gogo** » Mon Jul 16, 2007 12:58 pm

I got hold of a Ct28 turby yesterday. Going to fit it on in a week or 2. Was going for intercooler, but dunno what size and also dunno to go for front or top mount.

Post by **thewayitis** » Mon Jul 16, 2007 6:30 pm

I have the same engine and mine has a 3inch exhaust from turbo back. Mine runs 13psi allday everyday. Im going to go front mount simply for the fact, I cant fit a topmount under my bonnet. Ive been told that the way to do a front mount with a 13bt is to move the radiator back and use a different shroud and slip the intercooler in there. The plumbing seems a bit of a nightmare but i have a decent idea how to run it. If anyone has pics of a 13bt intercooled please post them up.

Post by **frp88** » Mon Jul 16, 2007 7:03 pm

Doesn't the lag increase if you it the intercooler that far away with alot of plumbing

Post by **Tapage** » Thu Jul 26, 2007 12:59 am

frp88 wrote:Doesn't the lag increase if you it the intercooler that far away with alot of plumbing

Yap .. and with a huge turbo housing also increase the lag ..

Actually I don't think you need change the turbo .. w ith the same CT26 you can reach easy 20 PSI with nice % of eficiente .. ( over 70% that's good ) and the proper air flow ( CFM ) for your engine ..

Just need to be sure if the diesel pump can flow all diesel that you need for really get performance from 20 PSI of boost ..

Post by **frp88** » Thu Jul 26, 2007 5:44 pm

If I was to fit a 3L Nissan intercooler would that be enough to go to 15psi

Post by **thewayitis** » Thu Jul 26, 2007 5:58 pm

frp88 wrote:If I was to fit a 3L Nissan intercooler would that be enough to go to 15psi

Dunno about you but i have no room what so ever for a top mount cooler.
Mine spikes 15psi every now and then but it sits on 13psi constantly. I just watch my egts

Post by **gogo** » Thu Jul 26, 2007 6:27 pm

I fitted the Ct28 turbo on and set the boost for 13psi. Sometimes goes to 16psi but not above. Ct28 trubo has improved performance a little at low end.
I doubt I can fit an intercooler under the bonnet and will have to got for a front mount.

Post by **Tapage** » Thu Jul 26, 2007 11:12 pm

frp88 wrote:If I was to fit a 3L Nissan intercooler would that be enough to go to 15psi

Actually you place an intercooler to cool down your EGT and yes, colder air = more Oxigen = more boost ..

But the main reson are your EGT to allow more boost in your intake. How are your EGT right now .. ?

Post by **midi73** » Mon Jul 30, 2007 12:31 pm

gogo wrote:I fitted the Ct28 turbo on and set the boost for 13psi. Sometimes goes to 16psi but not above. Ct28 trubo has improved performance a little at low end.
I doubt I can fit an intercooler under the bonnet and will have to got for a front mount.

Mate. are you interested in selling the ct26 turbo

Post by **v8zuki** » Mon Jul 30, 2007 6:25 pm

what did the ct28 turbo come off ??
does anyone know if the ct26 turbo is the same across the range eg 13bt,1hdt,7mgte and others ??
sorry about the hijack

Post by **gogo** » Mon Jul 30, 2007 6:55 pm

CT-28 came off a Toyota Supra 7M-GTE.

I am keeping hold of the old CT-26, just incase.

Post by **Tapage** » Mon Jul 30, 2007 11:57 pm

v8zuki wrote:what did the ct28 turbo come off ??
does anyone know if the ct26 turbo is the same across the range eg 13bt,1hdt,7mgte and others ??
sorry about the hijack

I'm not sure in 13B-T .. but the MR2, Supra and 1HD-T are not the same CT26 .. the same number, but diferent trim and AR at lease at the compresor side ..

Post by **gogo** » Sat Aug 11, 2007 9:33 pm

I took the CT-28 turbo off and reinstalled the ct26.Could not turn the ct-28 for low revs.

Put an extra large spring in the fuel pump and cranked up the fuel flow....dam thing go's like a rocket.....

Post by **gogo** » Sat Aug 11, 2007 9:35 pm

I have ordered over sized pistons and they should be here next month. With a rebore should just bout get 3.7l....14bt.

.......lete u's know how it goes..

Post by **known 2** » Sun Aug 12, 2007 11:30 am

sweet stroker 13bt. are u doing any head work while it's apart, custom cam?

Post by **midi73** » Sun Aug 12, 2007 11:49 am

known 2 wrote:sweet stroker 13bt. are u doing any head work while it's apart, custom cam?

Not a stroker from what I read, just oversize. A stroker means a different crank and rods.
3B, 13B/t, 14B/t all have 102mm bore size.
3B, 13B/t, have 105mm stroke.
14B/t hase 112mm stroke
and the 15Bt has 108mm bore size and 112mm stroke.
So when you oversize, it will have better performance but it wont be a 14BT in size unless you are stroking it as well.

Post by **Tapage** » Sun Aug 12, 2007 12:53 pm

Just wondering ..

Using 13B or 14B pistons in a 2H 98mm to 102mm

Or 15B on 14B

Post by **gogo** » Mon Aug 13, 2007 10:46 pm

I am going for the 14Bt 112mm stroke. The head I was just going to leave it alone. So I should in theory have a 14Bt...almost.

Post by **midi73** » Tue Aug 14, 2007 12:14 am

Tapage wrote:Just wondering ..

Using 13B or 14B pistons in a 2H 98mm to 102mm

Or 15B on 14B

Not sure on this. It depends on weather that much can be taken out of the bores. I am hoping so on the 14b to 15b scenario.

Post by **midi73** » Tue Aug 14, 2007 12:16 am

gogo wrote:I am going for the 14Bt 112mm stroke. The head I was just going to leave it alone. So I should in theory have a 14Bt...almost.

Sounds like a good plan. Although I reckon you would do better to do a little head work as well to help it flow the extra cubes.

Post by **dow50r** » Tue Aug 14, 2007 7:13 am

gogo wrote:CT-28 came off a Toyota Supra 7M-GTE.

I am keeping hold of the old CT-26, just incase.

Sorry, its a ct26...you may be getting confused with the Garrett t28

Post by **gogo** » Tue Aug 14, 2007 12:55 pm

garret...No, I was informed was Ct28 from Supra.

Post by **dogbreath_48** » Tue Aug 14, 2007 1:14 pm

dow50r wrote:
gogo wrote:CT-28 came off a Toyota Supra 7M-GTE.

I am keeping hold of the old CT-26, just incase.
Sorry, its a ct26...you may be getting confused with the Garrett t28

What's going on with all this CT28 talk! This manifold i've brought (safari) is supposed to suit a CT28 - i assumed the seller had confused it with a t28 as the safari's are meant to use a garret turbo. But i've heard a number of people refer to a CT28, though i've never actually seen one.

-Stu

Post by **gogo** » Tue Aug 14, 2007 1:37 pm

Dunno, perhaps folk becomming confused with C and G??? Perhaps eating too many carrots.

Checked my CT28 and has TOYOTA stamped on the side......and as I have not been eating any carrots for a while I cant confuse this with GARRET

Post by **MUSS** » Sat Aug 18, 2007 6:33 pm

wheres a few links i found that will help you out

http://www.outerlimits4x4.com/phpBB2/vi ... ntercooler

http://www.outerlimits4x4.com/phpBB2/vi ... ntercooler

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Improving performance of a 13B-T

Improving performance of a 13B-T

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