Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 Cart  | Project List | Order Status | Help    



Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > 911 / 930 Turbo & Super Charging Forum

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Oct 2006
Location: Raleigh, NC
Posts: 760
To Rebuild or swap?

I'm torn, I inherited an all original 1979 930 with 250,000 kilometers from my grandfather that has an engine which hasn't been touched (except for a turbo rebuild in 2000). It still seems to run strong (compression test in the very near future) but I'm sure if i add anymore horsepower this tired old engine wont handle.

What would u guys do?

Rebuild but worry about losing value when i do sell down the road? Or not for the fact that it has so many miles already?

or

Just build a new engine and swap (spend a lot more money and maybe not be able to do as many upgrades)
__________________
John A.
1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.)
05 Boxster S: For the Track.
06 Dodge Ram 2500 Power Wagon: Tow Vehicle
Old 11-29-2006, 03:27 PM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Dec 2005
Location: Atlanta, Georgia
Posts: 455
The first thing is to measure oil consumption, is it less than 1 quart per 800 miles? That would be acceptable. It would also be a good idea to have a compression & leakdown test done while the engine is warmed up. Share the results with this board, we can then give you further advice.
__________________
87 930
96 BMW M3 Coupe
89 951
Peugeot moped
Old 11-29-2006, 03:43 PM
  Pelican Parts Technical Article Directory    Reply With Quote #2 (permalink)
Registered User
 
Join Date: Oct 2006
Location: Raleigh, NC
Posts: 760
before my grandfather passed he said it was burning and leaking about a quart a week (it was his daily driver for summers ) but when i got it down here i put a quart of high mileage oil and not only does it not leak I havent had to put oil in it for about 1000 miles now.

Is it bad that when i do a warm start, and put my hand beside the exhaust, small chunks of carbon come out? they look like metal shavings but when i rub them between my fingers they disolve
__________________
John A.
1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.)
05 Boxster S: For the Track.
06 Dodge Ram 2500 Power Wagon: Tow Vehicle
Old 11-29-2006, 04:31 PM
  Pelican Parts Technical Article Directory    Reply With Quote #3 (permalink)
Registered User
 
WydRyd's Avatar
 
Join Date: Mar 2002
Posts: 3,563
Only way to tell what the condition of the engine is in internally is to do a compression test on all cylinders, followed by a leakdown on any suspect ones to ascertain where the leakage is coming from.

That'll take the guessing game out of it.

Good luck (& sorry for your loss).
__________________
Merv
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
Old 11-29-2006, 05:49 PM
  Pelican Parts Technical Article Directory    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Oct 2006
Location: Raleigh, NC
Posts: 760
Thank you gentlemen. both of you are sticking to the compression and leak down, and thats been on my mind since i got the car. just trying to get the best deal on the tools so I can DIY. I will be sure to post the results and appreciate any further assistance

P.S. If anyone has either a good compression and/or Leak down tester I am interested and will be buying within the next week. thanks
__________________
John A.
1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.)
05 Boxster S: For the Track.
06 Dodge Ram 2500 Power Wagon: Tow Vehicle
Old 11-29-2006, 07:59 PM
  Pelican Parts Technical Article Directory    Reply With Quote #5 (permalink)
Registered User
 
WydRyd's Avatar
 
Join Date: Mar 2002
Posts: 3,563
Just make sure you run the tests on a warm engine, so everything has had a chance to warm up and expand. If done cold, you might get funky/inconsistent results. BTDT.
__________________
Merv
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
Old 11-29-2006, 08:12 PM
  Pelican Parts Technical Article Directory    Reply With Quote #6 (permalink)
Registered User
 
Join Date: Jan 2003
Location: Burlington, Wisconsin
Posts: 8,816
also not sure how familar you are with porsche but you do know to check the oil warm and the car idling?? Just want to make sure
__________________
Ben

Current project 73 914-6 Gt project rusteration 2.4

*Reproduction 914-6 oil tank source* 2623647426
Old 11-30-2006, 06:03 AM
  Pelican Parts Technical Article Directory    Reply With Quote #7 (permalink)
Registered User
 
Join Date: Oct 2006
Location: Raleigh, NC
Posts: 760
yeah I have been an avid reader of the pelican forum for the past month so i have picked up alot of the tricks of this trade. Just wish i would of reminded my uncle about the oil check before he shipped it, definately spent a few hours cleaning up that mess.
__________________
John A.
1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.)
05 Boxster S: For the Track.
06 Dodge Ram 2500 Power Wagon: Tow Vehicle
Old 11-30-2006, 10:47 AM
  Pelican Parts Technical Article Directory    Reply With Quote #8 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 02:33 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2016 Pelican Parts - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.