ct20b rebuild??

PhatBoyMR2 · 01-31-2007, 09:59 PM

Just wondering if it's possible to rebuild the ct20b. Maybe even add a bigger wheel for more power? lmk

canadam · 01-31-2007, 10:04 PM

Weird, I was just wondering about this myself.

What's an ATS upgraded CT20B ? A CT21B ?

PhatBoyMR2 · 01-31-2007, 10:08 PM

it would be nice, maybe a 350rwhp rebuild on a ct20b, I mean we know what ct20bs are capable of but imagine that much power out of the 20b with not much lag at all.

Sang · 02-01-2007, 12:52 AM

Unless you're in a country where the turbo cam equipped on a stock car (US/Canada is not one of them, we only received the ct26), you wont find hardly any places that will have the necessary parts to rebuild them. If you do, expect to pay as much for it to be rebuilt as buying a different turbo outright.

The ct20b has a smaller shaft than the ct26, so putting a larger compressor on it will cause it to fail prematurely, which is why you don't see any "upgraded" ct20b's.

ATS machines the turbine side of the ct26 to flow better. There is no reason for them to modify a ct20b because the turbine flows better than it needs to really, and as i said above, they have no reason to upgrade the compressor side because of the weaker shaft.

kblake · 02-01-2007, 01:24 AM

Sang pretty much covered it. We were rebuilding 20b's a lot, and were having trouble getting parts to do it. That's what led Aaron to seek a better solution, which turned out the be the CT27.

PhatBoyMR2 · 02-01-2007, 12:19 PM

Thanks for the clear up. The reason why i asked is because i may get my hands on a ct20b with around 140k miles on it for real cheap. I'm not sure how much longer i will get out of it so i was thinking rebuild.

Maybe i can trade you this ct20b for a ct27

3sgtepower · 02-01-2007, 12:32 PM

Ill have a ct20b in need of a rebuild in a few weeks if ne1 wants it pm me

PhatBoyMR2 · 02-01-2007, 12:42 PM

Well i remember seeing this a while back and don't know if anyone has tried this but heres a rebuild kit that works for the ct20b

not sure how legit it is.

http://cgi.ebay.com/ebaymotors/CT20-...spagenameZWDVW

kblake · 02-01-2007, 01:57 PM

Part of the rebuild process (at least at OUR rebuilder) involves spin balancing the turbo at high RPM. I don't see how that could be accomplished using a DIY kit, and I definitely don't want something on my car spinning at 70k-100k RPM that is not in perfect balance.

Most new or freshly rebuilt turbos have a splotch of white paint on one of the compressor blades. This is there for the optical pickup on the balancing machine, and thus is a good indicator that the turbo was professionally assembled/reassembled.

kblake · 02-01-2007, 01:58 PM

Quote:

Originally Posted by PhatBoyMR2

Thanks for the clear up. The reason why i asked is because i may get my hands on a ct20b with around 140k miles on it for real cheap. I'm not sure how much longer i will get out of it so i was thinking rebuild.

You're welcome. Probably not much longer.

Quote:

Originally Posted by PhatBoyMR2

Maybe i can trade you this ct20b for a ct27

Since the 20b cannot be turned into a CT27, it has no value to us, sorry.

monopolizedinc · 06-06-2008, 08:30 PM

back from the dead.....
do you guys have the reuild parts for these turbos?
or what would it cost to have you rebuild it?
thanks
joe

Mr2civic817 · 06-07-2008, 12:42 PM

Quote:

Originally Posted by monopolizedinc

back from the dead.....
do you guys have the reuild parts for these turbos?
or what would it cost to have you rebuild it?
thanks
joe

this is my persoanly expirence,

I had my ct26 rebuilt by megestic turbo, with a stage 2 upgrade. I paid 600, I was told it was a decent deal. It boost strong, Matt at ATS told me he thought it was a CT27, minus the exhaust machining. so far I'm at 205rwhp, at 215 lbs of torque, Matt also told me I would of had higher dyno numbers If I had smaller wheels. I'm currently running 19x9.5 rims and 235/35R19 tires on my rears.

kblake · 06-07-2008, 01:21 PM

Quote:

Originally Posted by monopolizedinc

back from the dead.....
do you guys have the reuild parts for these turbos?
or what would it cost to have you rebuild it?
thanks
joe

The lack of rebuild parts, and unreliability of the 20b was what led ATS to develop the CT27.

monopolizedinc · 06-07-2008, 07:54 PM

the ct20 has already been replaced but it leaks oil under high psi... im only intrested in teh rebuild due to the high resale value of the turbo.

kblake · 06-07-2008, 08:47 PM

Check with Jebsleo on the other board. He apparently has a channel for rebuilding. Although I think rebuilding it will cost most of the resale value.

01-31-2007, 09:59 PM	#1 (permalink)
PhatBoyMR2 Banned Seller Join Date: Feb 2005 Posts: 684 Thanks: 4 Thanked 8 Times in 8 Posts My Google Map iTrader Rating: (5/86% )	ct20b rebuild?? Just wondering if it's possible to rebuild the ct20b. Maybe even add a bigger wheel for more power? lmk

01-31-2007, 10:04 PM	#2 (permalink)
canadam MidshipExpress Join Date: Feb 2005 Location: Beautiful British Columbia Posts: 10,399 Thanks: 120 Thanked 142 Times in 121 Posts My Google Map iTrader Rating: (34/100% )	Weird, I was just wondering about this myself. What's an ATS upgraded CT20B ? A CT21B ? __________________

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01-31-2007, 10:08 PM	#3 (permalink)
PhatBoyMR2 Banned Seller Join Date: Feb 2005 Posts: 684 Thanks: 4 Thanked 8 Times in 8 Posts My Google Map iTrader Rating: (5/86% )	it would be nice, maybe a 350rwhp rebuild on a ct20b, I mean we know what ct20bs are capable of but imagine that much power out of the 20b with not much lag at all.

02-01-2007, 12:52 AM	#4 (permalink)
Sang Turtle Join Date: Jul 2006 Location: FL Posts: 4,096 Thanks: 18 Thanked 267 Times in 246 Posts iTrader Rating: (5/100% )	Unless you're in a country where the turbo cam equipped on a stock car (US/Canada is not one of them, we only received the ct26), you wont find hardly any places that will have the necessary parts to rebuild them. If you do, expect to pay as much for it to be rebuilt as buying a different turbo outright. The ct20b has a smaller shaft than the ct26, so putting a larger compressor on it will cause it to fail prematurely, which is why you don't see any "upgraded" ct20b's. ATS machines the turbine side of the ct26 to flow better. There is no reason for them to modify a ct20b because the turbine flows better than it needs to really, and as i said above, they have no reason to upgrade the compressor side because of the weaker shaft.

02-01-2007, 01:24 AM	#5 (permalink)
kblake MR2 Parts Expert Join Date: Feb 2005 Location: Portland, Oregon Posts: 812 Thanks: 14 Thanked 48 Times in 37 Posts iTrader Rating: (1/100% )	Sang pretty much covered it. We were rebuilding 20b's a lot, and were having trouble getting parts to do it. That's what led Aaron to seek a better solution, which turned out the be the CT27.

02-01-2007, 12:19 PM	#6 (permalink)
PhatBoyMR2 Banned Seller Join Date: Feb 2005 Posts: 684 Thanks: 4 Thanked 8 Times in 8 Posts My Google Map iTrader Rating: (5/86% )	Thanks for the clear up. The reason why i asked is because i may get my hands on a ct20b with around 140k miles on it for real cheap. I'm not sure how much longer i will get out of it so i was thinking rebuild. Maybe i can trade you this ct20b for a ct27

02-01-2007, 12:32 PM	#7 (permalink)
3sgtepower Banned Seller Join Date: Feb 2006 Posts: 1,574 Thanks: 6 Thanked 38 Times in 34 Posts iTrader Rating: (2/75% )	Ill have a ct20b in need of a rebuild in a few weeks if ne1 wants it pm me

02-01-2007, 12:42 PM	#8 (permalink)
PhatBoyMR2 Banned Seller Join Date: Feb 2005 Posts: 684 Thanks: 4 Thanked 8 Times in 8 Posts My Google Map iTrader Rating: (5/86% )	Well i remember seeing this a while back and don't know if anyone has tried this but heres a rebuild kit that works for the ct20b not sure how legit it is. http://cgi.ebay.com/ebaymotors/CT20-...spagenameZWDVW

02-01-2007, 01:57 PM	#9 (permalink)
kblake MR2 Parts Expert Join Date: Feb 2005 Location: Portland, Oregon Posts: 812 Thanks: 14 Thanked 48 Times in 37 Posts iTrader Rating: (1/100% )	Part of the rebuild process (at least at OUR rebuilder) involves spin balancing the turbo at high RPM. I don't see how that could be accomplished using a DIY kit, and I definitely don't want something on my car spinning at 70k-100k RPM that is not in perfect balance. Most new or freshly rebuilt turbos have a splotch of white paint on one of the compressor blades. This is there for the optical pickup on the balancing machine, and thus is a good indicator that the turbo was professionally assembled/reassembled.

06-06-2008, 08:30 PM	#11 (permalink)
monopolizedinc They call me LUCKY! Join Date: Feb 2005 Location: lynchburg va Posts: 1,232 Thanks: 15 Thanked 20 Times in 16 Posts My Google Map iTrader Rating: (8/100% )	back from the dead..... do you guys have the reuild parts for these turbos? or what would it cost to have you rebuild it? thanks joe

06-07-2008, 07:54 PM	#14 (permalink)
monopolizedinc They call me LUCKY! Join Date: Feb 2005 Location: lynchburg va Posts: 1,232 Thanks: 15 Thanked 20 Times in 16 Posts My Google Map iTrader Rating: (8/100% )	the ct20 has already been replaced but it leaks oil under high psi... im only intrested in teh rebuild due to the high resale value of the turbo.

06-07-2008, 08:47 PM	#15 (permalink)
kblake MR2 Parts Expert Join Date: Feb 2005 Location: Portland, Oregon Posts: 812 Thanks: 14 Thanked 48 Times in 37 Posts iTrader Rating: (1/100% )	Check with Jebsleo on the other board. He apparently has a channel for rebuilding. Although I think rebuilding it will cost most of the resale value.