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Pcella
Samba Member
Joined: December 09, 2017
Posts: 8
Location: Shreveport
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 Posted: Sat Dec 09, 2017 7:52 pm Post subject: Turbo Engine Locked Up. |
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I just purchased a very nice 73 sedan with a 2276 turbo.
The motor was built by a reputable air cooled turbo builder.
It had already been broken in and I was told had about 1500 miles on it.
I put probably 2 miles on it after purchasing and made one short, maybe 1/8 mile pull and the motor locked up.
I have absolutely no air-cooled experience, but a good amount of performance experience, mainly with small block chevy and LS motors.
I have pulled the motor out and removed the heads and cylinders and all seems well with them and the pistons, but the motor is still locked up.
I am guessing that I have lost a main bearing but not sure.
Any suggestions or ideas what else it could be?
I'm really don't want to take this thing down any further myself since I have no idea what I am doing.
Also anyone know of a good performance shop close to Shreveport (North) Louisiana?
Thanks for the help,
Pat |
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Brian Anthony
Samba Member
Joined: October 02, 2006
Posts: 215
Location: Longview TX
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| Posted: Sat Dec 09, 2017 7:57 pm Post subject: Re: Turbo Engine Locked Up. |
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Take it to Oak Hill Automotive in Longview TX. A second generation classic VW garage.
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modok
Samba Member
Joined: October 30, 2009
Posts: 26776
Location: Colorado Springs
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| Posted: Sat Dec 09, 2017 8:12 pm Post subject: Re: Turbo Engine Locked Up. |
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Seized #1 main bearing is a common problem.
Any given set of bearings in any given engine case, these days, good chance it will be too tight or too loose, they can't seem to get it right every time like the Germans.
Chevy small blocks have had the exact same problem. Some specs say #5 main is smaller than the rest and others don't. Are you familiar with that? |
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Pruneman99
Samba Member
Joined: February 22, 2012
Posts: 5013
Location: Oceanside
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| Posted: Sat Dec 09, 2017 10:17 pm Post subject: Re: Turbo Engine Locked Up. |
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| Pcella wrote: |
I put probably 2 miles on it after purchasing and made one short, maybe 1/8 mile pull and the motor locked up.
Pat |
Man that's bad luck! Definitely sound like you spun a bearing. Since it's such a new engine, everything should be in good shape. Find out why it spun a a bearing, and get it put back together. Usually it's parts that didn't fit together, or oil starvation. |
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madmike
Samba Member
Joined: July 11, 2005
Posts: 5292
Location: Atlanta,Michigan
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| Posted: Sun Dec 10, 2017 4:58 am Post subject: Re: Turbo Engine Locked Up. |
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Deep sump? got a pic of the Motor? That will help us, But I'm guessing a spun rod bearing too 
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Pcella
Samba Member
Joined: December 09, 2017
Posts: 8
Location: Shreveport
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| Posted: Sun Dec 10, 2017 2:09 pm Post subject: Re: Turbo Engine Locked Up. |
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Guys,
Thanks for all of the quick responses.
Brian, I will get with Oak Hill and see what they have to say. Any idea if they have any experience with turbo engines?
Modoc, Yes I familiar with the confusion on the #5 main on smc engines. I'm afraid that we may be showing our age here. lol
Madmike, I'll try to get a picture of the engine posted tonight.
Thanks for all of the help! |
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Brian Anthony
Samba Member
Joined: October 02, 2006
Posts: 215
Location: Longview TX
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| Posted: Sun Dec 10, 2017 2:15 pm Post subject: Re: Turbo Engine Locked Up. |
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Yes, Oak Hill has plenty of experience with turbo engines. Ask for Daniel Watts. 903-297-3496
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modok
Samba Member
Joined: October 30, 2009
Posts: 26776
Location: Colorado Springs
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| Posted: Sun Dec 10, 2017 3:25 pm Post subject: Re: Turbo Engine Locked Up. |
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| Pcella wrote: |
Modoc, Yes I familiar with the confusion on the #5 main on smc engines. I'm afraid that we may be showing our age here. lol
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Great. Basically #5 was most likely to seize if it was too tight or saw a little oil starvation, so you want a little more clearance on #5 than the other bearings in the end, but they did that a few different ways depending on if they ground the crank smaller OR made the bearing thinner.
Same here. Mahle brand generally they make the #1 bearing for a bit more clearance but the other brands don't.
Silverline has the BEST main bearings these days but if you end up with #1 being tighter than it should be you gotta do something about it, maybe polish the crank smaller or get a set of mahle bearings and just use the #1 out of it perhaps.
So, might be anything but it probably is the SAME OLD problem.
Can't use plastigague tho, the bearing is a full circle. |
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Pcella
Samba Member
Joined: December 09, 2017
Posts: 8
Location: Shreveport
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| Posted: Sun Dec 10, 2017 7:13 pm Post subject: Re: Turbo Engine Locked Up. |
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Here is a picture of the engine.
[/img] |
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FreeBug
Samba Member
Joined: March 12, 2012
Posts: 4278
Location: deepest, darkest Switzerland
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| Posted: Mon Dec 11, 2017 3:09 am Post subject: Re: Turbo Engine Locked Up. |
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| What's the I.D. of that 90° bend you're using on the oil full-flow inlet to the case? that looks like it could be restrictive. |
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clonebug
Samba Member
Joined: January 29, 2005
Posts: 4027
Location: NW Washington
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| Posted: Mon Dec 11, 2017 6:26 am Post subject: Re: Turbo Engine Locked Up. |
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X2
Looks like a reducer and then a ninety. Also looks like the SAE style hardware instead of AN style.
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kangaboy
Samba Member
Joined: August 28, 2010
Posts: 1063
Location: St. Louis, Mo
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| Posted: Mon Dec 11, 2017 9:50 am Post subject: Re: Turbo Engine Locked Up. |
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| clonebug wrote: |
X2
Looks like a reducer and then a ninety. Also looks like the SAE style hardware instead of AN style. |
Yup. Seems like a bit too much brass. Small at that.
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challomoner
Samba Member
Joined: October 13, 2010
Posts: 1209
Location: IRELAND
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| Posted: Mon Dec 11, 2017 10:52 am Post subject: Re: Turbo Engine Locked Up. |
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| I had one lock up under an hour old, no 2 rod had stuck on crank due to lack of oil, due to dirt and debris blocking oilways, due to a complete numpty being left in charge of it. |
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Pcella
Samba Member
Joined: December 09, 2017
Posts: 8
Location: Shreveport
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| Posted: Mon Dec 11, 2017 11:41 am Post subject: Re: Turbo Engine Locked Up. |
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| FreeBug wrote: |
| What's the I.D. of that 90° bend you're using on the oil full-flow inlet to the case? that looks like it could be restrictive. |
I'm not at home where I can look at it, but are you talking about the brass fitting?
I don't know what's up with that. For the most part the thing seems pretty quality and there was a lot of money spent on quality parts where he could have skimped, but didn't. I did notice that and wondered why he went with that verses an an fitting. |
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jason
Samba Member
Joined: August 07, 2002
Posts: 3445
Location: Garage
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| Posted: Mon Dec 11, 2017 4:01 pm Post subject: Re: Turbo Engine Locked Up. |
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| If the rods are still free, not there. You’re almost there. |
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Pcella
Samba Member
Joined: December 09, 2017
Posts: 8
Location: Shreveport
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| Posted: Mon Dec 11, 2017 5:55 pm Post subject: Re: Turbo Engine Locked Up. |
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I looked at that fitting closer and if I was a betting man I would say that's probably what caused my problem.
I didn't measure it, but I'm almost sure that it an AN4 (1/4") reduced from about an AN8 (1/2").
I wonder why anyone would buy forged pistons and rods, port and polish the heads, go with a high dollar turbo and cheap out on the hose and fittings. |
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esde
Samba Member
Joined: October 20, 2007
Posts: 5960
Location: central rust belt
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| Posted: Mon Dec 11, 2017 6:05 pm Post subject: Re: Turbo Engine Locked Up. |
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Do you know that the engine had real miles on it before you bought it?
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modok wrote:
Bent cranks are silent but gather no moss. I mean, ah, something like that. |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20377
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Mon Dec 11, 2017 6:06 pm Post subject: Re: Turbo Engine Locked Up. |
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Because builder was probably not person who "assembled" the parts to put it in car....
Dale
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Pruneman99
Samba Member
Joined: February 22, 2012
Posts: 5013
Location: Oceanside
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| Posted: Mon Dec 11, 2017 6:12 pm Post subject: Re: Turbo Engine Locked Up. |
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| Dale M. wrote: |
Because builder was probably not person who "assembled" the parts to put it in car....
Dale |
This.
The engine was sold as a long block I bet. Whoever put the ancillaries on it probably just used what they had, or didn't know better. You can get away with that (maybe) on a low rev stocker, but not a high revver turbo. You need oil! |
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Pcella
Samba Member
Joined: December 09, 2017
Posts: 8
Location: Shreveport
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| Posted: Tue Dec 12, 2017 5:22 am Post subject: Re: Turbo Engine Locked Up. |
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| esde wrote: |
| Do you know that the engine had real miles on it before you bought it? |
I was told that it had 1500 on it. |
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