Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
> Jeff's 2270 Build
NCRider
post Oct 27 2016, 07:50 PM
Post #1


Newbie
*

Group: Members
Posts: 18
Joined: 5-June 10
From: Apex NC
Member No.: 11,809
Region Association: South East States



Hi all ,
I started my 2270 build in 2013 and as many of use life had other things I was to do. But Im back on it now. Im starting this so I have a topic I can ask for advise. Below are 2 Topics a posted in 2013 as part of this build.

Case Stud Sealant?
Rocker set question?

Currently I am shuffling cylinders and pistons around to get CR as close as I can across all cylinders. I am finding some deviations in chamber volumes, deck heights & stroke measurements.

I didn't measure the crank stroke on the bench before i put it in the motor for the mock up. But I will once I tear it down. I am however measuring it directly for each cylinder, and finding bit of deviation from cylinder to cylinder. Im guessing that this is some what expected. Let me know what you guys think about measuring stoke in this way. Im thinking its pretty accurate with all the parts in place. The A's & B's represent the head chamber volumes with the heads in the 2 possession. The little box number are the spigots and the big numbers are the cylinders and sub numbers are the piston numbers.


Attached Image

Attached Image


Jeff
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ottox914
post Oct 28 2016, 02:22 PM
Post #2


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



WOW, thats a sweet rig for measuring deck height. You build it or buy it?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
NCRider
post Oct 28 2016, 04:06 PM
Post #3


Newbie
*

Group: Members
Posts: 18
Joined: 5-June 10
From: Apex NC
Member No.: 11,809
Region Association: South East States



I made them. I hope to make some progress this weekend.

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
NCRider
post Oct 30 2016, 10:38 AM
Post #4


Newbie
*

Group: Members
Posts: 18
Joined: 5-June 10
From: Apex NC
Member No.: 11,809
Region Association: South East States



Does anyone know what the spec is for the difference in cylinder height? I have about .0025 difference when torqued down. Will that cause a problem with the head sealing?

Attached Image

Jeff
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 25th April 2024 - 02:57 AM