 Recommended Rev limit for 2.7L 6 cyl, I'm curious |
|
|
|
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. |
|
|
| nine14cats |
 Dec 23 2003, 10:53 PM
Post
#1
|
|
Bill Pickering -- 914-6 GT aka....Leeloo  Group: Members Posts: 2,618 Joined: 10-February 03 From: Campbell, CA Member No.: 287 Region Association: None  |
Anyone know what the factory valve train is good for at the upper rev limit in terms of reliability? I've got a pumped 2.7L in my 914 with carbs and 10.5:1 compression, mod heads, big cam...the works. Last year I ran without a rev limiter (i'm a knucklehead) and used 7500 rpm as my limit. Towards the end of the year I over-reved the car with my right foot to ~8K a few times and broke a few rings. I had the engine dis-assembled and it's all prettied up again (including more mods!), but I was curous as to what the motor's hardware was originally designed to do. I've heard alot of folks recommend 7200 rpm as safe and reliable.
I purchased a new MSD ignition with the adjustable modules. I can program the rev limit in 200 rpm increments. I'll start at 7K for awhile. Anyone know what the design limit is? The car has stock valves, springs, crank. Heads have been chamfered for clearance and the pistons are JE. Camshaft from webcam. Weber triple throats on each side. The motor will rev easily to 8K with the tap of the foot. Thanks in advance for the opinions! (IMG:style_emoticons/default/wavey.gif) Bill P. |
   |
 
|
Posts in this topic
nine14cats Recommended Rev limit for 2.7L 6 cyl Dec 23 2003, 10:53 PM
ArtechnikA QUOTE
nine14cats Thanks for the input guys....I'll break in the... Dec 24 2003, 07:22 PM Brad Roberts YOU dont. They break it in on the dyno. Let it run... Dec 24 2003, 07:24 PM nine14cats B,
After I have JWE break it in...am I good to go... Dec 24 2003, 07:45 PM Brad Roberts I cant really say whether you are good to go or no... Dec 24 2003, 07:59 PM
drew365 QUOTE
  |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 31st May 2024 - 07:00 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.