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Engine Specific Info and Questions => IDI Engine => Topic started by: Fredrikkk on May 30, 2011, 08:26:19 am

Title: K24 from a high-milage car
Post by: Fredrikkk on May 30, 2011, 08:26:19 am
Okay so I went to this VW/Audi junkyard and asked of he had a turbo laying around, and he did. After inspecting the tag on it, it was a K24. I checked the shaft and it had no axial play but there was maybe 0.5-1.5 mm of play radially. The car it came from had 398,000 km on it. He wants 1,500 NOK which is like... $130.

Yay or nay?
Title: Re: K24 from a high-milage car
Post by: R.O.R-2.0 on May 30, 2011, 08:43:22 am
that seems like a bit much for basically a turbo core. i would rebuild something like that..
Title: Re: K24 from a high-milage car
Post by: Fredrikkk on May 30, 2011, 08:50:19 am
Ah... I don't want to rebuild :( I just want to slap it on and go! I'll have to reconsider...

Btw here in Norway everything is more expensive so for me it's not too bad.
Title: Re: K24 from a high-milage car
Post by: Mark(The Miser)UK on May 30, 2011, 11:24:47 am
If he'll let you take it home and try it, and return if faulty then that is OK.
Did the fins blades show any sign of tip damage? Or can you get it to scrape the housing when turning with the fingers?

If not, then when gorged with oil it will likely as not, run fine.
Title: Re: K24 from a high-milage car
Post by: Fredrikkk on May 30, 2011, 12:16:15 pm
If he'll let you take it home and try it, and return if faulty then that is OK.
Did the fins blades show any sign of tip damage? Or can you get it to scrape the housing when turning with the fingers?

If not, then when gorged with oil it will likely as not, run fine.
Well, the turbo was completely dry and there was a tiny bit of resistance when turning, but I couldn't get the blades to touch the housing. I could not see any damage either!

I will talk to the guy selling it and ask if I can either get some sort of warranty or some money off.
Title: Re: K24 from a high-milage car
Post by: jiggs on May 30, 2011, 12:27:37 pm
thats a little bit of excessive play... :P

I gave around 70€~$100 usd for a almost new one...
Title: Re: K24 from a high-milage car
Post by: Fredrikkk on May 30, 2011, 02:24:57 pm
Hm well, that's cheap as hell.. but one has to see the prices in comparison to what the general income and *** of the country is. People here make more money, so the prices are adjusted up.

I don't know... I want to try so bad but then again, I'd be scared the turbo grenades itself  ???
Title: Re: K24 from a high-milage car
Post by: nathan_b on May 30, 2011, 10:29:36 pm
intercool it, that's what intercoolers are for isn't it? to catch all the pieces of your blown turbo before they enter the intake
Title: Re: K24 from a high-milage car
Post by: Thezorn on May 30, 2011, 10:32:05 pm
intercool it, that's what intercoolers are for isn't it? to catch all the pieces of your blown turbo before they enter the intake

Never actually realized how true this is!!!!
Title: Re: K24 from a high-milage car
Post by: Fredrikkk on May 31, 2011, 01:51:06 am
intercool it, that's what intercoolers are for isn't it? to catch all the pieces of your blown turbo before they enter the intake
Good deal... I have the stock intercooler so I'll be good then  ;D
Title: Re: K24 from a high-milage car
Post by: BillyWillicker on May 31, 2011, 06:16:58 am
Thats not too bad a price.  I'd buy it, oil it up and run it easy for like 5 miles.  After that it will most likely last a good while.
Title: Re: K24 from a high-milage car
Post by: Fredrikkk on May 31, 2011, 06:25:41 am
Thats not too bad a price.  I'd buy it, oil it up and run it easy for like 5 miles.  After that it will most likely last a good while.
How would I go about oiling it up? Just squirt some in the oil hole or just in the intake? :)
Title: Re: K24 from a high-milage car
Post by: 8v-of-fury on May 31, 2011, 06:46:51 am
Thats not that much play at all. The turbo has sat for a while, and does not have any oil between its bearings. Normally it will be pressurized and held in the center of the housing.. Check this out;

http://www.vwdiesel.net/forum/index.php?topic=21899.0
Title: Re: K24 from a high-milage car
Post by: Fredrikkk on May 31, 2011, 06:50:11 am
Thats not that much play at all. The turbo has sat for a while, and does not have any oil between its bearings. Normally it will be pressurized and held in the center of the housing.. Check this out;

http://www.vwdiesel.net/forum/index.php?topic=21899.0
I read that post! Very helpful :)

Can you answer my question of how to oil it up?
Title: Re: K24 from a high-milage car
Post by: R.O.R-2.0 on May 31, 2011, 07:59:56 am
drop some oil in the feed hole and start spinning the shaft.. the same way the engine would oil it..
Title: Re: K24 from a high-milage car
Post by: Alcaid on May 31, 2011, 11:39:30 am
I hope it's a 1.6TD version of the K24 :)
Title: Re: K24 from a high-milage car
Post by: Fredrikkk on May 31, 2011, 12:30:50 pm
I hope it's a 1.6TD version of the K24 :)
Yes it is! It's from an imported Golf supposedly. Are there however any part numbers I should avoid, and if so, why? The flange matches...
Title: Re: K24 from a high-milage car
Post by: J Z on May 31, 2011, 03:01:27 pm
This is how I usually do.
Have someone start the car while you hold the impeller still with a pen. Wait 10 - 15 seconds and the oil should have built up pressure.
Title: Re: K24 from a high-milage car
Post by: 8v-of-fury on May 31, 2011, 07:28:02 pm
whats happens to all the exhaust gases that want to turn the exhaust side?
Title: Re: K24 from a high-milage car
Post by: nathan_b on May 31, 2011, 11:35:43 pm
This is how I usually do.
Have someone start the car while you hold the impeller still with a pen. Wait 10 - 15 seconds and the oil should have built up pressure.


Personally, I'd rather get the damage from 10s of unoiled unloaded turbo spinning, than the risk of holding a pen in the intake of a running motor.
Title: Re: K24 from a high-milage car
Post by: Fredrikkk on June 01, 2011, 02:24:20 am
I think I'll just oil it manually :) and then install it...
Title: Re: K24 from a high-milage car
Post by: J Z on June 01, 2011, 04:16:07 am
I'm not talking about sticking a pen into a spinning impeller here, or maybe I'm not so good at explaining...   ???

It must be kept still before starting the engine, and the exhaust gases are not That strong on idle.
And, exhaust gases pass through the turbo without any problems at idle..

Title: Re: K24 from a high-milage car
Post by: Mark(The Miser)UK on June 01, 2011, 05:03:32 am
At idle it wont spin until lubed anyway. Just don't rev engine until vane has been rotating of its own accord.  
Title: Re: K24 from a high-milage car
Post by: Fredrikkk on June 01, 2011, 05:16:13 am
Lots of good answers :)

I'm getting the turbo next week and I'll probably start installing too, so stay tuned! :D
Title: Re: K24 from a high-milage car
Post by: R.O.R-2.0 on June 01, 2011, 07:04:21 am
just prime the oil system after you install the turbo. thats definitely the easiest thing to do.
Title: Re: K24 from a high-milage car
Post by: Mark(The Miser)UK on June 01, 2011, 07:31:13 am
 
Lots of good answers :)

I'm getting the turbo next week and I'll probably start installing too, so stay tuned! :D


Good stuff!
Here's a funny story:
For the 10 years or so I've been into diesel VWs, I've often heard about how sensitive the turbos are and look at 'em wrongly and they may grenade, destroy the engine ,and half of the village....

Well 2 years ago, I had a headgasket go, so I skimmed the head by hand and removed the 6 thou variation [and probably more flesh than I should have done, as since then I've had piston to valve clash-apparently noisy but harmless :o].
Anyway a week later, I'm driving up our town bypass and suddenly there is a dull 'thunk', and the car slows down to a crawl, does not stall, but wil not accelerate. I get round one of our particularly nasty 'roundabouts'   with about 10 cars breathing down my neck , and I'm just able to mount the kerb and pull off the road.
I lift the hood and start fiddling:
 Pulling on the pump lever slowly raises the speed above idle, but nothing more. I unclip the filter thinking maybe it had blocked somehow and found I'd left the filter out ::).
There is a funny low pitched whistle coming from the intake. I pull off the hose to the turbo and find it rotating but looking 'white'....

(http://img28.imageshack.us/img28/4010/bungedupturbo.th.jpg) (http://imageshack.us/photo/my-images/28/bungedupturbo.jpg/)

Turning off the engine I found I had sucked in a couple of sheets of paper towel :o
Pulling out the impacted paper, I found that I had done no damage that I could detect. Two years on and it still works fine.
Due to the oil consumption up till last August when I reringed; this car has only ever been run on 30W 50 multigrade.
I now have to change the multigrade once a year, rather than keep topping up; so my soft drink bottle cylinder abrade has been successful as far as I can tell
(http://img442.imageshack.us/img442/7789/imgp9948.th.jpg) (http://imageshack.us/photo/my-images/442/imgp9948.jpg/)

Title: Re: K24 from a high-milage car
Post by: Fredrikkk on June 01, 2011, 07:42:13 am
I'll make sure to prime it!

And that is one hell of a story! Haha I'll have to make sure to be careful about paper towels when I install :D
Title: Re: K24 from a high-milage car
Post by: Fredrikkk on June 07, 2011, 06:07:17 am
Well, I picked up the turbo, and luckily it came with the intake hose and the oil line. I only have to make a new return line :)

(http://i.imgur.com/gIHHal.jpg)