 Main bearing clearances? |
|
|
|
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. |
|
|
| stugray |
 Jul 28 2012, 08:56 PM
Post
#1
|
|
Advanced Member  Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None  |
I am getting ready to put my short block together and I have what appears to be a fairly new crank.
Main bearing journals: 2.361. The bearings appear to be new unused STD-STD. When I put on the main bearing that goes directly beneath the cam gear dry and wiggle it I get ~4 thousandths "wiggle" when measured with a dial indicator stuck to the flywheel. Does that sound correct? Would that be considered two thousandths bearing clearance (2 on each side = 4)? Stu |
   |
 
|
  |
Replies
| stugray |
Jul 29 2012, 01:26 PM
Post
#2
|
|
Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
QUOTE It almost sounds like you are talking about endplay, with your odd measurement procedure there. No I am measuring how much the bearing moves side to side (perpendicular to crank centerline) with a dry bearing. .004 seems to be OK, but it seems that not many people do this "odd measurement" as a final sanity check before putting the crank in the case. So I dont have anyone's measurements to compare to. Stu |
|
|
|
Posts in this topic
stugray Main bearing clearances? Jul 28 2012, 08:56 PM
mrbubblehead
I am getting ready to put my short block together... Jul 28 2012, 09:14 PM stugray Yes I have heard of plastigauge, but you cannot us... Jul 28 2012, 09:58 PM
mrbubblehead
Yes I have heard of plastigauge, but you cannot u... Jul 28 2012, 09:59 PM stugray Bump.
Bolting halves together today.
Anyone else ... Jul 29 2012, 10:08 AM McMark I've never measured the rock but it's defi... Jul 29 2012, 10:11 AM Racer Chris
...
When I put on the main bearing that goes dire... Jul 29 2012, 10:32 AM nathansnathan The crank journal should be between 2.3610 and 2.3... Jul 29 2012, 10:45 AM stugray The crank is bolted to the flywheel sitting on the... Jul 29 2012, 11:03 AM nathansnathan I've always taken my crankcase, crank, and fly... Jul 29 2012, 12:18 PM sixnotfour :beer2: Jul 29 2012, 02:50 PM ldsgeek The only way to check the clearance on those beari... Jul 29 2012, 07:07 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 8th June 2024 - 09:03 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.