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Turbo question for a sierra
https://auszookers.com/forum/viewtopic.php?f=5&t=47786
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Author:  petes 80 [ Sun Sep 14, 2014 6:16 pm ]
Post subject:  Turbo question for a sierra

Hi All,

I was given a CT20 turbo from a mate and I was just curious if it could work on my 96 Coily G13ba????????

cheers

Pete

Author:  droverdave [ Sun Sep 14, 2014 6:55 pm ]
Post subject:  Re: Turbo question for a sierra

should bolt right on.

Author:  Gwagensteve [ Sun Sep 14, 2014 7:03 pm ]
Post subject:  Re: Turbo question for a sierra

Which CT20?

The CT20 from the 1GGTE would be a little small in my opinion.

There's some other trims though.

I have a pair of 1GGTE CT20 turbos and as a single they are a reasonable upgrade for a 660cc triple, but I reckon they're out of flow at around 110hp. That's probably too small for a 1.3 as a healthy 1.3 is already at near 70hp.
it seems that stock 1GGTE's seem to top out around 220hp on stock turbos from what I've seen.

They're getting old though, and a rebuild looks to cost about $1K.

Steve.

Author:  petes 80 [ Sun Sep 14, 2014 7:13 pm ]
Post subject:  Re: Turbo question for a sierra

My understanding it is off a surf/Hiace 2.4lt!!!!!!

Author:  JrZook [ Sun Sep 14, 2014 7:32 pm ]
Post subject:  Re: Turbo question for a sierra

petes 80 wrote:
My understanding it is off a surf/Hiace 2.4lt!!!!!!Diesel


When selecting a turbo you should consider the power output of the vehicle and match it to your needs instead of engine capacity as G-wagz was implying.

~100Hp outta the 1.3 would be a nice ~40% power up and should be reliable. At least the ct20 should come on boost quite early.

Author:  petes 80 [ Mon Sep 15, 2014 11:24 am ]
Post subject:  Re: Turbo question for a sierra

Thanks for the feedback guys, I think it might be a bit out of my league to get it to work properly so I might just try the transfer case gear upgrade to get a bit better gearing for it on and off road.

It's a coilly (don't sting me hehehe) running 235/75/15's and it revs high in low range 1st and won't engine brake at all going downhill. I know the turbo wouldn't have fixed that I was also trying to chase a bit more power hehehe

Cheers

Pete

Author:  vet 180 [ Mon Sep 15, 2014 8:06 pm ]
Post subject:  Re: Turbo question for a sierra

It would give a good low and midrange hit but run out of puff in the top end. Having experimented on small turbos on big engines before I think it would be a lot of fun. I ran a stock rb20 turbo on a na rb30 and loved it. Made no power past 5500rpm but was amazing around 1500-4500rpm.

So you won't make much extra power in tot maybe 30hp but at 3000rpm you will have tripple what you have now! Would make it fun to drive

Author:  Gwagensteve [ Mon Sep 15, 2014 8:53 pm ]
Post subject:  Re: Turbo question for a sierra

Triple? My guess is a Sierra makes about 40hp at 3k. You're claiming 120hp? really?

Author:  vet 180 [ Tue Sep 16, 2014 12:09 am ]
Post subject:  Re: Turbo question for a sierra

Gwagensteve wrote:
Triple? My guess is a Sierra makes about 40hp at 3k. You're claiming 120hp? really?

I am not claiming 120hp at 3k as I seriously doubt a Sierra makes 40hp at 3k. My guess would be around 25-30. I think most of the turbos power would be on by 3k and it will be out of puff earlier and slowly bleed boost.

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