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Registered
Join Date: Jul 2007
Posts: 77
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Can a 944na block be used in place of a 951 block?
Hello, I have a 1986 951 turbo car that I wanted to build a engine for. I have a extra 1986 944 na block and wanted to know what is different if any about the two, and if i would be able to use it? or any other information would be awesome!
Thank you, Steven |
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05-02-2010, 12:04 PM
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Registered
Join Date: Feb 2010
Posts: 29
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Yes you can use 86 N/A block you will have to drill and tap left balance shaft housing for turbo oil feed line.
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05-02-2010, 02:17 PM
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Ornery Bastard
Join Date: Sep 2001
Location: South Sound
Posts: 2,879
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The cylinder walls in the 951 block are strengthened (thicker) compared to the 944 N/A block and the 951 uses an external oil cooler as opposed to the 944 N/A's oil/coolant heat exchanger which is integral to the 944 N/A engine block.
Overall, I would not recommend using an N/A block as the base for a turbo engine. I'm sure that with enough time and money it would be possible, but it would be easier and much cheaper to use a proper 951 block.
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--------- Silver 1998 Volvo S70 T5 <- Daily (Anja) Guards Red 1986 951 <- Seattle car (Gretchen) White 1976 914 2.0 F.I. <- Prodigal car, traded away then brought back again (Lorelei) |
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05-03-2010, 05:31 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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are you sure they are thicker? two pictures: first is the turbo, second is my '83
 
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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05-03-2010, 06:22 PM
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Ornery Bastard
Join Date: Sep 2001
Location: South Sound
Posts: 2,879
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Clark's Garage says thicker, so that's what I went with. Haven't been inside one to put a micrometer on the cylinder walls myself though.
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--------- Silver 1998 Volvo S70 T5 <- Daily (Anja) Guards Red 1986 951 <- Seattle car (Gretchen) White 1976 914 2.0 F.I. <- Prodigal car, traded away then brought back again (Lorelei) |
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05-03-2010, 07:43 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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neither have i. you could be right, along with clark's. i'd never heard that before and didn't remember reading it on clark's page.
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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05-03-2010, 07:44 PM
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Ornery Bastard
Join Date: Sep 2001
Location: South Sound
Posts: 2,879
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It's kind of buried in the 944 Turbo FAQ on Clark's (italics added because it's easy to skip over):
Quote:
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--------- Silver 1998 Volvo S70 T5 <- Daily (Anja) Guards Red 1986 951 <- Seattle car (Gretchen) White 1976 914 2.0 F.I. <- Prodigal car, traded away then brought back again (Lorelei) |
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05-03-2010, 09:13 PM
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Registered
Join Date: Jan 2009
Location: Reno, NV
Posts: 180
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The original '86 blocks are the same as NA. You would have to drill and tap the BS cover and simply bolt on the oil filter console/t-stat housing. It wasn't until later that the reinforced case was introduced.
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Don Weaver-EBS Racing don@ebsracing.com 2006 Cayman S '86 944T '00 Boxster with EBS Racing 3.4 liter engine |
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05-04-2010, 10:20 AM
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Registered
Join Date: Jul 2007
Posts: 77
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Thank you Guys, I'm think I will just look for a turbo block. I think it will be less complex if stay with turbo parts..
Thank you for all your info on this matter! Steven |
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05-15-2010, 04:41 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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get a late block, then. '88 or later, is my suggestion.
__________________
2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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05-15-2010, 06:35 PM
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