Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 914 & 914-6 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
DuckRyder's Avatar
 
Join Date: Jul 2002
Location: Atlanta, GA
Posts: 385
Send a message via AIM to DuckRyder
Porsche Crest Euro Pistons In This Motor? (96mm?) UPDATED.

Are these Euro Pistons?











There are the following markings on the bottom of the piston, cast in "L" and "2". Across from the arrow on the face is a "2" in ink. The cylinders have red dots on them.

My cheap caliper shows 96mm BIG BORE?
__________________
Robert
1975 Porsche 914/4-2.0
1972 Ford F100 Ranger XLT
2006 Ducati Sport 1000

323i.net
RangerXLT.com

Last edited by DuckRyder; 12-23-2002 at 03:35 PM..
Old 12-22-2002, 03:19 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
chrisreale's Avatar
 
Join Date: Aug 2001
Location: San Francisco Ca
Posts: 697
no, euro's are flat, not concaved
__________________
1973 914 2.0 PCA Member GGRwww.pelicanparts.com/gallery/chrisreale/
www.914club.com
Old 12-22-2002, 03:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
3D914's Avatar
 
Join Date: May 2001
Location: Benson, AZ
Posts: 817
Garage
DuckRyder,

They don't look like the German Euro pistons I've used.

Hopefully Brad or Jake can chime in. They've built enough engines I'm sure they've seen everything out there.

Enjoy!
__________________
Gerard
74-914 White - Soon to be a custom 3.2L Six 87-924S 2.5L Artic White - SOLD 74-914 2.0L Ravenna Green - SOLD

Last edited by 3D914; 12-22-2002 at 03:41 PM..
Old 12-22-2002, 03:34 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
chrisreale's Avatar
 
Join Date: Aug 2001
Location: San Francisco Ca
Posts: 697
Well, they look like the stock US pistons that were in my motor. They could be a Euro design, Im not sure, but the new Euro KS pistons I bought from Pelican were flat
__________________
1973 914 2.0 PCA Member GGRwww.pelicanparts.com/gallery/chrisreale/
www.914club.com
Old 12-22-2002, 03:39 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
jamcleod's Avatar
 
Join Date: Nov 2001
Location: Vienna, VA
Posts: 916
Garage
Send a message via AIM to jamcleod
you can take the sheet metal under the head off before you remove the head
Old 12-22-2002, 03:44 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
DuckRyder's Avatar
 
Join Date: Jul 2002
Location: Atlanta, GA
Posts: 385
Send a message via AIM to DuckRyder
Quote:
Originally posted by jamcleod
you can take the sheet metal under the head off before you remove the head
So, shall I put you down as Yes or No on the pistons?

And, you can take the sheetmetal under the head off before you remove the head IF the last guy that worked on it (who wasn't you by the way) did not put the screws in it with a 3 foot breaker bar and strip the screw heads in the process.

Additional info is that they would have been purchased ~13 years ago and may be a long discontinued brand of aftermarket "Euros"
__________________
Robert
1975 Porsche 914/4-2.0
1972 Ford F100 Ranger XLT
2006 Ducati Sport 1000

323i.net
RangerXLT.com

Last edited by DuckRyder; 12-22-2002 at 04:09 PM..
Old 12-22-2002, 03:53 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
jamcleod's Avatar
 
Join Date: Nov 2001
Location: Vienna, VA
Posts: 916
Garage
Send a message via AIM to jamcleod
put me down for "don't know" about the pistons. i agree about the screw holding the sheet metal on. on the few i've done, the broken (usually) screw is taken out by the machine shop. also, the tiny 4mm hex head that holds the piece to the head. this time, i put a little allen "stud" in the head then put a nut on instead of using a hex bolt. no criticism intended
Old 12-22-2002, 04:08 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
DuckRyder's Avatar
 
Join Date: Jul 2002
Location: Atlanta, GA
Posts: 385
Send a message via AIM to DuckRyder
Great idea on the stud on the bottom of the head. Mine had a flat head screw in it (just like all the others.) It just wasn't quite so tight as the ones in the case.


The tin is pretty ragged, I think I'm going to pull it off of my spare motor or find a nicer used set.
__________________
Robert
1975 Porsche 914/4-2.0
1972 Ford F100 Ranger XLT
2006 Ducati Sport 1000

323i.net
RangerXLT.com
Old 12-22-2002, 04:21 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
mike mueller's Avatar
 
Join Date: Nov 1998
Location: antioch, ca, usa
Posts: 1,082
According to DD, the original Euro pistons had a "slight" dish to them.

I have set of new aftermarket Euro pistons and mine are flat. I also have another set of pistons from a 2.0 that have a much smaller dish than the ones shown in your picture.


I'd say stock smog pistons.
__________________
'73 914, 1.7, with Boxster transmission in the future?
Old 12-22-2002, 04:38 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
DuckRyder's Avatar
 
Join Date: Jul 2002
Location: Atlanta, GA
Posts: 385
Send a message via AIM to DuckRyder
My caliper says that the dish is 7.0 cm X .2 cm ?

Somewhat smaller than the 7.5cm x .3 cm on PP's euro vs standard page.

Could these be Kolbenschmidt Euro Pistons.

If I pull a jug, can I find any manufacturer's stamp?

there is a "2" in ink visable on the forward piston (and they all have arrows pointing to the transmission)
Old 12-22-2002, 05:01 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered User
 
chrisreale's Avatar
 
Join Date: Aug 2001
Location: San Francisco Ca
Posts: 697
My KS euro pistons, which were bought about three months ago, were flat.
__________________
1973 914 2.0 PCA Member GGRwww.pelicanparts.com/gallery/chrisreale/
www.914club.com
Old 12-22-2002, 05:03 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
DuckRyder's Avatar
 
Join Date: Jul 2002
Location: Atlanta, GA
Posts: 385
Send a message via AIM to DuckRyder
Quote:
Several readers have pointed out that the Kolbenschmidt Euro pistons do in fact have a dish. These pistons were also used on stock 914s. The compression ratios are similar to the Mahles shown above. We are currently looking for info and pictures of these pistons.
I guess that shoots that in the foot.

My dad was told these were Euros when he bought them, guess not.
__________________
Robert
1975 Porsche 914/4-2.0
1972 Ford F100 Ranger XLT
2006 Ducati Sport 1000

323i.net
RangerXLT.com
Old 12-22-2002, 05:13 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
Administrator
 
Dave at Pelican Parts's Avatar
 
Join Date: Dec 1969
Location: Silly-Con Valley
Posts: 14,062
Garage
Send a message via AIM to Dave at Pelican Parts Send a message via Yahoo to Dave at Pelican Parts
Looks like a pretty large dish to me. Might not even be US spec; might be Bus pistons... (7.3:1)

There are two versions of Euro-spec pistons. The original ones have a smaller dish than the US-spec ones; there is a cut-away in the factory manual that shows the difference in the shape of the dish. (I think the US ones had beveled edges to the dish and Euro ones had curved edges but I'm not sure.) The ones that are commonly available now are flat-topped.

Bus pistons have an even larger dish. If I had to guess, I'd guess that these are Bus ones. But I could very easily be wrong.

--DD
__________________
Pelican Parts 914 Tech Support

A few pics of my car: http://www.pelicanparts.com/gallery/Dave_Darling
Old 12-22-2002, 07:49 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Rochester, NY
Posts: 502
Maybe they're Euro Bus, then everyone could be right!
__________________
1974 914/1.8
2005 BMW 530i
2008 GMC Acadia
Old 12-23-2002, 03:24 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered User
 
Join Date: Oct 2001
Location: Gautier Ms
Posts: 1,582
Garage
2.0L Oh really

Well the bore and stroke maybe 2.0L sorry don't have a calibrated monitor. But those heads are not original 2.0L 914 heads. Only 3 intake studs. But then again I would imagine these piece were cut to fit. Maybe that explains the grind marks around the valves as they are bigger now. Those pistons don't look like they have alot of miles on them as they are nearly clean. The combustion chambers on the other hand have lots of build up.
Old 12-23-2002, 04:45 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered User
 
DuckRyder's Avatar
 
Join Date: Jul 2002
Location: Atlanta, GA
Posts: 385
Send a message via AIM to DuckRyder
They have the same amount of miles on them (pistons and heads)

They are 2.0 heads, If you are reffering to the 2 circled holes on the head picture, those are the air injector holes.

I guess I'm going to have to pay jake a visit.
__________________
Robert
1975 Porsche 914/4-2.0
1972 Ford F100 Ranger XLT
2006 Ducati Sport 1000

323i.net
RangerXLT.com
Old 12-23-2002, 05:37 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Registered User
 
hardflex's Avatar
 
Join Date: Sep 2002
Location: dfw tx
Posts: 3,952
FWIW, Here's more to confuse the issue.

I've got a set of pistons with 7cm x .15 cm dish. I calculated the area of the dish and it's about 5.5cc. I'm going to use these.
underside says 94v3++
Mahle

I have a bus piston also, measures 6.35cmx.57mm dish, works out to about 18cc's.
PD
__________________
72 914 2056: 74 9146 2.2: 76 914 2.0
Old 12-23-2002, 09:15 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Registered User
 
DuckRyder's Avatar
 
Join Date: Jul 2002
Location: Atlanta, GA
Posts: 385
Send a message via AIM to DuckRyder
Additional pictures and information was added to the first post.
__________________
Robert
1975 Porsche 914/4-2.0
1972 Ford F100 Ranger XLT
2006 Ducati Sport 1000

323i.net
RangerXLT.com
Old 12-23-2002, 03:37 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Registered User
 
hardflex's Avatar
 
Join Date: Sep 2002
Location: dfw tx
Posts: 3,952
96 is nice. both blown head gaskets is not so nice. I wonder if it's the "junk" cylinders syndrome?
__________________
72 914 2056: 74 9146 2.2: 76 914 2.0
Old 12-23-2002, 06:00 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #19 (permalink)
ASE Master Tech - 35 yrs
 
larrym's Avatar
 
Join Date: May 2001
Location: Sierra foothills, CA-usa
Posts: 1,032
Garage
nada! they are NOT euro pistons; they look like late 2.0 (74-76)low CR pistons,
Old 12-23-2002, 09:27 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 06:30 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - 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.