Question for Engine Gurus.... |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Question for Engine Gurus.... |
MikeM |
Dec 5 2018, 10:10 AM
Post
#1
|
Senior Member Group: Members Posts: 558 Joined: 16-May 10 From: Calgary, Canada Member No.: 11,733 Region Association: Canada |
Hi all...I'm planning some engine work for my 74 2.0 liter.
I've been advised to use the 96mm pistons and cylinders from AA. Do the experienced engine guys here use the RINGS that come with the P and C's from AA, or do you use something else? Thanks!! |
Mblizzard |
Dec 5 2018, 10:46 AM
Post
#2
|
Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
I purchased some other rings for mine. Not sire of the brand but never used them.
I checked the end gaps on the AA rings and they were perfect and they appeared to be exactly the same rings as the ones I purchased. But that just my single experience. |
iankarr |
Dec 5 2018, 11:08 AM
Post
#3
|
The wrencher formerly known as Cuddy_K Group: Members Posts: 2,469 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region |
(IMG:style_emoticons/default/agree.gif)
I'm (very) far from an engine guru, but I did a top end rebuild with the 96mm AA pistons and jugs and the rings were perfect out of the box. Engine runs great. But definitely scrutinze themn for any issues and check gaps before installing. |
BeatNavy |
Dec 5 2018, 11:51 AM
Post
#4
|
Certified Professional Scapegoat Group: Members Posts: 2,921 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
I purchased JE pistons through AA recently and they shipped with what I believe are Grant rings (although it was never mentioned in paperwork). They needed a fair amount of gapping. Parts are out getting balanced now, and I haven't decided whether to buy a set of Hastings or use the Grants. In the grand scheme of things, rings are pretty cheap, so I may just buy some Hastings.
Some interesting things I noticed with these (assumed) Grant rings: 1. As mentioned, there was almost no gap on 1st and 2nd compression rings as they came. 2. LARGE gap on the oil retainer rings (e.g., > .030 inch) out of the box which had me worried initially, but research suggests that's not really an issue on the oil retainers/scrapers as long they are not too close. 3. Paperwork indicates 2nd compression ring should have a larger gap than 1st ring, which runs counter to general guidance I've read here about 1st rings running hotter and needing more gap, but the machine guy says it is different metal on the 2nd ring and to go with their recommendations. LOTS of threads on rings here, and LOTS of varying opinions and experiences. And no, I'm not an engine guru either. Just sharing my recent experience. |
StratPlayer |
Dec 5 2018, 12:32 PM
Post
#5
|
StratPlayer Group: Members Posts: 3,261 Joined: 27-December 02 From: SLC, Utah Member No.: 27 Region Association: Rocky Mountains |
If your going to do a 96 mm setup I would buy my jugs and keith black piston, and hasting rings from European Motor Works. They have the best set up.
|
StratPlayer |
Dec 5 2018, 12:33 PM
Post
#6
|
StratPlayer Group: Members Posts: 3,261 Joined: 27-December 02 From: SLC, Utah Member No.: 27 Region Association: Rocky Mountains |
[quote name='StratPlayer' post='2671324' date='Dec 5 2018, 11:32 AM']
If your going to do a 96 mm setup I would buy my jugs and keith black piston, and hasting rings from European Motor Works. They have the best set up.http://www.europeanmotorworks.com/vw/type-4-pistons-cylinders.html |
MikeM |
Dec 5 2018, 02:52 PM
Post
#7
|
Senior Member Group: Members Posts: 558 Joined: 16-May 10 From: Calgary, Canada Member No.: 11,733 Region Association: Canada |
What do you mean by "my" jugs?
Mike |
Tdskip |
Dec 5 2018, 05:07 PM
Post
#8
|
Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Jugs (here anyway) = bores where the pistons go
|
MikeM |
Dec 5 2018, 06:08 PM
Post
#9
|
Senior Member Group: Members Posts: 558 Joined: 16-May 10 From: Calgary, Canada Member No.: 11,733 Region Association: Canada |
Yes I know that...he said buy "MY" jugs. Does he sell cylinders?
Mike |
Olympic 914 |
Dec 5 2018, 06:10 PM
Post
#10
|
Group: Members Posts: 1,658 Joined: 7-July 11 From: Pittsburgh PA Member No.: 13,287 Region Association: North East States |
With the Keith Black hypereutectic pistons the top ring gap is larger.
|
burton73 |
Dec 5 2018, 06:49 PM
Post
#11
|
burton73 Group: Members Posts: 3,461 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California |
Get a hold of Mark Henry up in your neck of the woods. He is an expert Eng. m (IMG:style_emoticons/default/santa_smiley.gif) an and should be able to get you the right deal up there. Plus he is a very nice guy.
Bob B Burton (IMG:style_emoticons/default/santa_smiley.gif) |
ottox914 |
Dec 5 2018, 07:30 PM
Post
#12
|
The glory that once was. Group: Members Posts: 1,302 Joined: 15-December 03 From: Mahtomedi, MN Member No.: 1,438 Region Association: Upper MidWest |
+1 for Mark. Also +1 for oem iron jugs overbored, KB slugs, and Hastings rings.
|
MikeM |
Dec 5 2018, 10:15 PM
Post
#13
|
Senior Member Group: Members Posts: 558 Joined: 16-May 10 From: Calgary, Canada Member No.: 11,733 Region Association: Canada |
This is all good information. Just to be clear, I'd gladly pay for Mark Henry's work but
he's 3500 km from me!!! Mike |
cgnj |
Dec 6 2018, 12:55 AM
Post
#14
|
Senior Member Group: Members Posts: 620 Joined: 6-March 03 From: Medford, NJ Member No.: 403 Region Association: None |
What's the current cost of getting cylinders torque plate hone to accommodate 96mm cylinders vs. a set from EMS? The question should be comparing that cost against the qa of cylinders from AA or EMS.
|
Mark Henry |
Dec 6 2018, 07:37 AM
Post
#15
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
This is all good information. Just to be clear, I'd gladly pay for Mark Henry's work but he's 3500 km from me!!! Mike Thanks for the recommendation guys (IMG:style_emoticons/default/beer.gif) I'm competitive on LN products but not on iron cylinder sets. When building complete engines for peeps iron P&C's are basically a loss leader for me. I do a lot of heads for independent porsche shops, I have a steady customer in Edmonton, but for the most part distance is an issue. My choice would be KB's from EMS or T4store. |
Lo-Fi Version | Time is now: 28th March 2024 - 11:17 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |