Author Topic: Help me pick a good turbo once and for all. (Read 26849 times)

blkboostedtruck · « **Reply #45 on:** July 07, 2008, 06:28:19 pm »

Quote from: "zukgod1"

So this is what it looked like after a 530 miles drive with no turbo.

After a quick wash job.

Dan i wanna see your pics. from coming back from montana!
your link did not work!
and your K26 is on its way with other stuff you ordered from me!
sent out last nite!
Duane

zukgod1 · « **Reply #46 on:** July 07, 2008, 06:46:19 pm »

Quote from: "jtanguay"

was it smoking bad? maybe that was just the residual oil burning off...

Picture a TD with a now restricted intake manifold and exhaust manifold being in NA mode with TD fuel.

Ya it was smoking ALLOT!!

zukgod1 · « **Reply #47 on:** July 07, 2008, 06:51:22 pm »

Quote from: "burnt_servo"

quickly went through this thread ...... and i could find no one who has sugested compund turbo's .......

compound turbo's would give very fast spool up , but huge amounts of air on the top end , while also giving reliability of a single turbo at stock presure levels ( assuming it's enginered properly )

to prevent the k24 from self destructing at 25 -35 psi , add a bigger turbo that feed into it , taking alot of stress off it , and putting it back with in it's operating limits .

the question is , what would make a good big turbo to pair up with the k24 ?
would something like a k26 be large enough ?

Believe me compounds have been considered. Problem being i need to drive the thing. The problem is the mounting/ plumbing of said compound system and the time frame available.

I'm with ya on the k24 but I think a k14 would be better for the small turbo, them something like a T3/T4 with a .50 AR on the cold side and a .68 on the hot side would finish it off.

With that amount of air flowing i'll bet you could keep the pressures down around 15 psi and still have more air than a k26 could move..

Keeping the head bolted down could be a problem though.

Compounds have been done and keeping the head on just didnt happen.

zukgod1 · « **Reply #48 on:** July 07, 2008, 06:55:16 pm »

Quote from: "blkboostedtruck"

Quote from: "zukgod1"
So this is what it looked like after a 530 miles drive with no turbo.

After a quick wash job.

Dan i wanna see your pics. from coming back from Montana!
your link did not work!
and your K26 is on its way with other stuff you ordered from me!
sent out last nite!
Duane

I don't know why they aren't showing up Duane.

http://www.dubnetworks.net/picture.php?albumid=2&pictureid=72

http://www.dubnetworks.net/picture.php?albumid=2&pictureid=73

http://www.dubnetworks.net/picture.php?albumid=2&pictureid=74

blkboostedtruck · « **Reply #49 on:** July 07, 2008, 07:29:28 pm »

wow :shock: you could almost scrape it off and put it back in the oil pan :roll: L,O,L how was the trip back? run at 70mph all the way home?
Duane

zukgod1 · « **Reply #50 on:** July 07, 2008, 08:30:12 pm »

Quote from: "blkboostedtruck"

wow :shock: you could almost scrape it off and put it back in the oil pan :roll: L,O,L how was the trip back? run at 70mph all the way home?
Duane

70???

HAHAHAHAHAHAHAHAHA!!!!!!!!!!!!!!

Down hill sure.

I could JUST get to 65 on flat ground, hills were a joke..

zukgod1 · « **Reply #51 on:** July 08, 2008, 10:38:52 am »

Quote from: "jimfoo"

Never dealt with them, but, http://www.spooledmotorsports.com/turbochargerscat.php?category=Used

These guys don't appear to be doing business.

There # just rings and no reply to e mail.

zukgod1 · « **Reply #52 on:** July 08, 2008, 10:43:16 am »

So my current plan sounds like it's going to be to use a K26 center section and compressor, have the K24 exhaust housing machined to clear the 26 exhaust wheel and bolt it on.

I don't have a good 24 wheel and shaft unless the turbo I just bought from blkboostedtruck is the same as the 24 (fingers crossed) so using the 26 wheel and shaft is my only option if I want to keep the spooling of the 24 and get a larger compressor at the same time.

just looks like changing everything over to the T3/4 style turbo is a apin in the butt..

andy2 · « **Reply #53 on:** July 08, 2008, 03:06:45 pm »

You can actually use the k24 center section for the hybrid.I have a k24/k26 hybrid sitting around with the k26 turbine wheel machind to fit the k24 housing.I was going to use it on my compound setup however I did some turbo research and figured it would not be efficent as the k26 compressor housing A/R (bigger) is not suited for higher PR's and the k24 turbine housing is a bit small on the A/R.This combo is a bit of a mismatch so I decided to get a 50 trim T3 (not T3/T4 TOO BIG) off ebay.And it spools slow but its a properly matched turbo with a .42 A/R comp and .48 A/R turbine and 50 trim comp and turbine.

The gt20 is nice but won't last forever at 25-30 psi as it has a small shaft when compared to the T3.I've seen these gt20's with broken shafts,they are not that tough Which is why I'd never use one!I would only use a turbo that I know would last The k14 has a bigger shaft than the gt20!

zukgod1 · « **Reply #54 on:** July 09, 2008, 09:40:44 am »

So here's is where I sit right now.

I ordered a k24-26 rebuild kit from gopropshop and should have it tomorrow, I have a good k26 coming from blkboostedtruck and I will be using the compressor side of that one on my k24 center section along with the k26 shaft and exhaust wheel.
I'm having the k24 exhaust housing machined for the k26 wheel.

This should give me better pressure ratios and help the turbo to live longer and I can just bolt it on without having to fab up stuff.

I do think I'm going to go full blown T3 in the future though.
I'll pick up a manifold with the T3 foot on it then get a NEW t3 and have a small exhaust housing put on it so I can spool it. Thinking I'll get a .28ar on the exhaust and I will use my spare engine to get all the oil feed and drains fabed up and maybe even the DP so when it's time to bolt it all on I will just have to run the IC piping and air filter and be done..
Truth be told I'll prob just refresh the spare engine and just swap engines with the t3 already mounted.

Still up for suggestions/tips as I go here.

I'll post pics of the turbo and it's assembly if I have time before I reassemble it and install it.

jackbombay · « **Reply #55 on:** July 09, 2008, 10:15:56 am »

If you can find a compressor map for that K26 I'll plot out a few points for you...

zukgod1 · « **Reply #56 on:** July 09, 2008, 10:38:40 am »

I wonder how accurate it will be though?
As I'm using the smaller housing off the k24 with the larger k26 wheel (exhaust).

I'll see if I can find one but I don't think I've had any luck in the past trying to find one.

jackbombay · « **Reply #57 on:** July 09, 2008, 07:33:41 pm »

If you use the cold side compressor housing and comp wheel from the 26 the map will still be accurate. The compressor doesn't care whats turning it as far as its efficiency goes, "whats turning it" only affects when it spools. but using points like 3000 RPM and 10 PSI were pretty safe, ie, the turbo will surely be able to make 10 PSI at 3000 RPM and thats going to be reasonably close to 75 MPH on flat ground...

zukgod1 · « **Reply #58 on:** July 10, 2008, 06:26:23 am »

Lets see if this works. This is for the K26

jackbombay · « **Reply #59 on:** July 10, 2008, 08:37:04 am »

2.3 for a max pressure ratio is pretty low :?

I'll plot a few points this evening.

Author Topic: Help me pick a good turbo once and for all. (Read 26849 times)

andy2