|
|
|
|
| Author |
|
|
Registered
Join Date: Jul 2005
Location: Seattle
Posts: 5,824
|
Cylinder honing - regarding ccypher's post
Been reading some old posts and such about Alusil cylinders and such.
One thing I question... I'm getting the impression that a bad cylinder can be replaced...got this from a 911 thread from 03 . Can 944 cylinders also be replaced? Second thing...I was loking through the Pelican parts list at piston and such and came across this: Rebuilding your engine is a process that should be done right. For the most reliable of rebuilds, replace your pistons with new ones. If you are reusing your old ones, make sure that you have them checked at a good machine shop to make sure that the ring grooves are not worn. Also, the inside of the bores should be honed. Failure to do so may result in a new set of rings not seating properly. So...why does it say to hone them? Maybe Pelican should change that...it could confuse someone... Now I want an an engine I can tear up. |
||
12-19-2005, 08:18 PM
|
|
|
Registered
Join Date: Feb 2001
Location: Viera FL
Posts: 5,642
|
No, 944 cylinders cannot be replaced. Cylinders on a 911 are separate pieces
AFJ
__________________
Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
||
|
12-19-2005, 08:23 PM
|
|
|
Registered
Join Date: Jul 2005
Location: Seattle
Posts: 5,824
|
Quote:
|
||
|
12-19-2005, 08:36 PM
|
|
|
Registered
Join Date: Feb 2001
Location: Viera FL
Posts: 5,642
|
If the scratch or gouge is shallow enough, you can get it bored and retreated.
Too deep - yes, the block is trashed. AFJ
__________________
Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
||
|
12-19-2005, 08:41 PM
|
|
|
Registered Lunatic
|
Now, someone please correct me if I'm wrong, but I think I remember reading that particular oversized pistons (Porsche stock) were of the same weight. So is it plausable that if you only have one bad bore to get away with buying one piston and doing it???? I know, backyard at it's very best.
|
||
|
12-19-2005, 09:10 PM
|
|
|
Registered
Join Date: Feb 2001
Location: Viera FL
Posts: 5,642
|
You are correct, that is possible. Unfortunately, they only gave you a maximum of 1mm to work with, If you had a scratch greated than 0.5mm deep, you were out of luck.
AFJ
__________________
Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
||
|
12-19-2005, 09:37 PM
|
|
|
|
Registered
Join Date: Apr 2005
Location: Ontario, Canada
Posts: 4,554
|
damn.. 0.5mm seems like such a tiny amount.. you'd never think it'd really affect anything.
__________________
Kyle 2008 Mini Cooper // '83 Porsche 944 // '01 Mazda Protege [sold] // "Never break more than you fix!" - SoCal Driver |
||
|
12-19-2005, 09:43 PM
|
|
|
Registered
Join Date: Oct 2003
Posts: 455
|
Here's a photo of the single most expensive piece of metal on a 944
 I could have sworn I heard of some of the racers putting sleeves in these motors. Anyone heard about that? I wouldn' think it would be very long lived, compared to the silicon cyllinder bores. P
__________________
1983 928S 5-speed, 1984 944, 1990 944S2 Cabriolet My other car is a Chris Craft Commander http://www.chriscraftcommander.com |
||
|
12-20-2005, 09:00 AM
|
|
|
winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
|
i am pretty sure they can be ferrous sleeved.
__________________
2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
||
|
12-20-2005, 09:48 AM
|
|
|
Registered Lunatic
|
Yes, some have sleeved these. I don't know what type of sleeve etc. In fact I.ve wondered if Devek actually takes a 3.0 litre block and sleeves it down to 2.7 (meaning thicker walls) in order for the block to handle the high boost????
Any thoughts???
__________________
If'n I tell ya a rabbit can pull a freight train, then son, hitch his ass up! |
||
|
12-20-2005, 10:44 AM
|
|
|
Registered
Join Date: Sep 2004
Location: Houston, TX USA
Posts: 218
|
Don Istook in Ft. Worth resleeves if the bore is scratched. (817) 332-6547
If you don't know who Don Istook is, he's been racing Porsches for 30+ years, was racing 944s when only a small handful of people in this country actually even owned them. He also owns an Audi S4 Grand Am Cup team.
__________________
George Roffe |
||
|
12-21-2005, 10:55 AM
|
|
|
Registered
Join Date: Mar 2005
Location: Ogden, UT
Posts: 510
|
so yes or no?
to bore or not to bore.. that is the question
__________________
1984 Porsche 944 - down for the count, may be rebuilt 1999 Civic ex coupe - Turbocharged fun/Daily Driver |
||
|
12-21-2005, 11:42 AM
|
|
|
Registered
Join Date: Jun 2004
Location: Granite Falls, WA
Posts: 543
|
Quote:
No.......I think it is more, how much money do you want to spend, and where and WHAT do you want to end up with.
__________________
1985/1 944 Granite Red (wife's car. Iceshark is lighting her way) 1983 944 Platinum (my daily) 1985/1 Guards Red (project) Last edited by Granite 944; 12-21-2005 at 06:19 PM.. |
||
|
12-21-2005, 06:16 PM
|
|
