Turbo from 965 in 951?
03-14-2009, 05:44 AM
#1
Rennlist Member
Thread Starter
Turbo from 965 in 951?
I should know this by now, but am double checking for a friend.
He's bought a used turbo from a 965 and is looking to use it in his '86 951. My initial reaction was "no," as I don't believe the 911 turbos are set up with a liquid (oil and coolant) cooling system like those in the 944 Turbo, right? Not to mention it's huge! At any rate, can this 911 turbo be adapted for use in a 944 Turbo application?
The markings on this KKK are: "K27 DEV" and "HP 97 398"
Thanks!
He's bought a used turbo from a 965 and is looking to use it in his '86 951. My initial reaction was "no," as I don't believe the 911 turbos are set up with a liquid (oil and coolant) cooling system like those in the 944 Turbo, right? Not to mention it's huge! At any rate, can this 911 turbo be adapted for use in a 944 Turbo application?
The markings on this KKK are: "K27 DEV" and "HP 97 398"
Thanks!
03-14-2009, 06:31 AM
#2
Drifting
I guess you could, but how would you cool it? Hopefully, some one who would know better than I will chime in. My guess would be you could install it, but have to come up with some way to cool it. Looks like a standard K27. AFAIK. Not sure if I could see the cooling feed from that angle on ours. Probably a tough spot to air cool something on our cars. Just a guess tho.
03-14-2009, 06:54 AM
#3
Rennlist Member
Well if the turbo is from an air cooled engine and not setup for water cooling then why can't you run it without? A lot of turbos run 'dry'. Sounds like a K27 which is not too large either.
03-14-2009, 07:18 AM
#4
Lazer Beam Shooter
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I dont think there is a very reasonable way to watercool a dry turbo. I always thought that water cooled turbos had a seperate water jacket. It would be a PITA to make one. I guess.
Id run it dry!
As long as the oil passages are lined up then id go for it. But thats just me.
Id run it dry!
As long as the oil passages are lined up then id go for it. But thats just me.
03-14-2009, 07:36 AM
#5
Drifting
Doesnt necesarily need ventialtion? In our cars, I couldnt imagine there being much in that spot.
03-14-2009, 08:36 AM
#6
Rennlist Member
Most turbos are 'dry'. Virtually all LR turbos are run dry. You're right, there is not good ventilation there and the factory supplied water cooled turbos for a reason. Most likely longevity since they had problems with the 924 turbo in this area. However this one is already in 'captivity'. More than likely bought for a song so no real harm in trying it?
03-14-2009, 09:14 AM
#7
Racer
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If he wants to use that turbo, he needs the dry setup coolant hoses. I think they're like 50 bucks at Lindsey. He will also need some kind of a plug for the turbo coolant tank or he can just use and NA coolant tank.
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03-14-2009, 09:42 AM
#8
Race Director
If it bolts up to the motor mount/x-over a n/a expansion tank will be needed. The turbo watercooling stuff (waterpump/coolant x-over/etc) would need to go too.
Plenty of turbos are oil only cooled, so I don't think its that big of a problem, but I like bolt oil/coolant.. insurance I guess.
03-14-2009, 10:30 AM
#9
Race Car
check the hotside size before going any further. IIRC the 964's use a much larger hotside ~10cm. You could have it mated to a 8 or 6 with some work to achieve a decent 300-350 hp turbo. Or bolt it on as is for higher hp but slow spool.
The oil cooled only doesn't really pose a problem, he will just need to get rid of the lines and get an NA expansion tank as mentioned above.
The oil cooled only doesn't really pose a problem, he will just need to get rid of the lines and get an NA expansion tank as mentioned above.
03-14-2009, 11:46 AM
#10
An oil cooled turbo isnt bad. Alot of cars come this way from the factory and go a long way before needing a rebuild. I bought an oil cooled turbo to siplify the cooling and reduce the chance of leaks. If you already have one go ahead and use it, but you will need to order new hoses and either block the expansion tank port or get another on from an na.
03-14-2009, 05:11 PM
#11
Rennlist Member
check the hotside size before going any further. IIRC the 964's use a much larger hotside ~10cm. You could have it mated to a 8 or 6 with some work to achieve a decent 300-350 hp turbo. Or bolt it on as is for higher hp but slow spool.
The oil cooled only doesn't really pose a problem, he will just need to get rid of the lines and get an NA expansion tank as mentioned above.
The oil cooled only doesn't really pose a problem, he will just need to get rid of the lines and get an NA expansion tank as mentioned above.
Think you can just plug the 951 tank to achieve the same thing.
03-14-2009, 09:28 PM
#13
Addict
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the 965 used 2 iterations of K27 IIRC - K27/7200 and K27/7006. Both work but the hotside is a #11 (huge). You have the option of running as a dry turbo and grafting on a different hotside, or taking your old watercooled K26 and grafting on the K27 compressor housing and wheel - that is what I did to make a water and oil cooled K27/6
03-14-2009, 09:54 PM
#14
Nordschleife Master
If your friend does decide to run this turbo with out water cooling, just make sure they let the car idle a few minutes after hard driving, this will prevent oil coking in the bearing section. You should do the same even with the water cooled turbos, but dont really need to wait nearly as long.
03-14-2009, 09:58 PM
#15
Three Wheelin'
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Yeah, why can't he just use his old center section and put the compressor on it? I'd see if the hot housing will bolt up. If his stock hot side is a #6, I wouldn't even bother. That's would be a terrible combo. Couldn't the water cooled center section be used with the 911 compressor and hot side?