 1.8 big bore, What big bore to go for |
|
|
|
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. |
|
|
  |
| Rehellek |
 Apr 7 2014, 04:35 AM
Post
#1
|
|
Newbie  Group: Members Posts: 1 Joined: 7-April 14 From: London uk Member No.: 17,213 Region Association: None  |
Hi guys
I will not bang on too much about the track day I had with a few 914 pals at abingdon airfield in Oxfordshire last Friday, although it was great to meet new people and new cars , I sadly limped home in my 1.8!!!! Fan belt came off damaging the fan and now the engine has to come out. I have been thinking of a big bore kit for a while and I know I have options. I am aware I could go for @ 96mm slip in which will take me up to 1911cc , or 2056 with a 2 litre crank. Am I correct? Or I could put a 78.4 mm crank in which would take me to 2270 cc , now that is more like it. I do have twin dellortos on the car which is good and I am aware I would need to re-jet those, no prob. Is there anything else I would have to do ? Would this be a reliable conversion? Would I need to change cam? I am keen to do this and do it correctly without having to sell my mother to fund it!!! Look forward to your very welcome advice. Hope you are all enjoying your 914s David |
   |
 
|
| type47 |
Apr 7 2014, 05:43 AM
Post
#2
|
|
Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
QUOTE(Rehellek @ Apr 7 2014, 02:35 AM)  Would I need to change cam? (IMG:style_emoticons/default/welcome.png) Do you know what cam is in the engine now? If carbs were put on replacing the FI system w/o changing the cam, it's generally thought that that leaves some performance on the table. If you want to stick w/carbs (IMG:style_emoticons/default/shades.gif) have a cam that will optimize carb performance. Personally, I wouldn't install a stroker cam but that's because of my limited mechanical ability. 2L crank OK ... |
|
|
|
| McMark |
Apr 7 2014, 09:57 AM
Post
#3
|
|
914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Just swap the pistons and cylinders to 96s if you wanna keep it cheap. Otherwise you're looking at a full rebuild and if that's the case, go 2056 or 2270 depending on where your fund are. Don't forget getting 2.0 heads. (IMG:style_emoticons/default/wink.gif)
|
|
|
|
| madmax914 |
Apr 7 2014, 11:17 AM
Post
#4
|
|
Member Group: Members Posts: 204 Joined: 16-February 14 From: Salem, Oregon Member No.: 17,007 Region Association: Pacific Northwest |
Correct me if I'm wrong but if the cylinders are in good shape can't he hone them out to 96mm? That way you can invest in some really nice quality pistons and rings.
|
|
|
|
| johannes |
Apr 7 2014, 01:12 PM
Post
#5
|
|
Club Porsche 914 France President Group: Members Posts: 3,084 Joined: 13-January 06 From: France Member No.: 5,409 Region Association: France |
2.0 crank also means 2.0 rods ... and the bill grows up ...
1.8 heads are OK for a 2056. |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 17th June 2024 - 05:39 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.