 Engine modifications, What makes the best sense ? |
|
|
|
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. |
|
|
| jim_hoyland |
 Jul 2 2016, 07:42 PM
Post
#1
|
|
Get that VIN ?  Group: Members Posts: 9,418 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California 
 |
About 10 years ago my stock '75 1.8L L-Jet was rebuilt. A 2L crank was installed along with 94mm pistons.
Can runs good, slows down quite a bit on hills. My mechanic has suggested replacing the cylinders/Pistons with 96mm. The engine would be kept FI with the L-Jet Does this make sense and would other mods be required ? |
   |
 
|
  |
Replies
| Mark Henry |
Jul 2 2016, 08:43 PM
Post
#2
|
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
96mm over 94mm won't make a difference, at least not noticeable.
I wouldn't change unless you need new P&Cs. L-jet is what it is, smooth running, predictable, but it's not a powerhouse. The only cheap mod that will make good, noticeable improvement is a set of headers...but then you will lose heat. |
|
|
|
| ClayPerrine |
Jul 2 2016, 08:57 PM
Post
#3
|
|
Life's been good to me so far..... Group: Admin Posts: 15,820 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
|
QUOTE(Mark Henry @ Jul 2 2016, 09:43 PM)  L-jet is what it is, smooth running, predictable, but it's not a powerhouse. I disagree. The L-Jet on Betty's 914 is great. It is smooth and reliable. And it is the basis for the Motronic system used on all current Porsche cars. The biggest problem with a stock motor is breathing. Bigger valves, a different cam, and a bigger throttle body does wonders for a 914 with L-Jet. I put a Raby 9590 cam in Betty's car, along with 2.0 valves in 1.8 heads and a Bus throttle body. Doing that woke up the motor. It pulls strong all the way to redline. |
|
|
|
Posts in this topic
jim_hoyland Engine modifications Jul 2 2016, 07:42 PM
jim_hoyland
L-jet is what it is, smooth running, predictable... Jul 2 2016, 09:34 PM
Mark Henry
[quote name='Mark Henry' post='2366866' date='Jul... Jul 2 2016, 09:53 PM colingreene Jim lives in Sunset beach, really no need for heat... Jul 2 2016, 08:50 PM wndsrfr
About 10 years ago my stock '75 1.8L L-Jet wa... Jul 2 2016, 08:54 PM jim_hoyland Thanks for that analysis, you pretty much said wha... Jul 2 2016, 08:57 PM r_towle In my opinion, like a computer, it's possible ... Jul 2 2016, 09:43 PM Mueller Hi Jim, I thought when I drove your car last year ... Jul 2 2016, 10:57 PM jim_hoyland
Hi Jim, I thought when I drove your car last year... Jul 3 2016, 06:29 AM 914forme Tangerine Headers - you can keep heat heat if that... Jul 3 2016, 06:14 AM |
4 User(s) are reading this topic (4 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 27th September 2024 - 03:26 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.