Can I put larger pistons on a 1.8 ltr w/ stock EFI, Max piston size for L jetronic 1.8 liter |
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Can I put larger pistons on a 1.8 ltr w/ stock EFI, Max piston size for L jetronic 1.8 liter |
pnewman |
Dec 10 2005, 11:20 PM
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#1
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Member Group: Members Posts: 371 Joined: 15-February 05 From: Lincolnshire, IL Member No.: 3,606 Region Association: Upper MidWest |
I was considering doing a head job and changing the pistons and cylinders on my 1.8 liter while I have it out. (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif)
What are the oem cylinders? 70 mm? I have seen people peddling "94mm" I am not looking at doing dual carbs right now. (IMG:http://www.914world.com/bbs2/html/emoticons/screwy.gif) Can I go larger and still use the stock L jetronic Fuel Injection system that I have kept well maintained over the years? |
Pugbug |
Dec 12 2005, 06:54 AM
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#2
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Member Group: Members Posts: 449 Joined: 14-February 05 From: Victoria, BC Member No.: 3,604 |
I'd definitely go to the 96mm cylinders at least. Gives you 1911 displacment, and an engine that likes to rev.
I rebuilt my 1.8 last winter to that size, but used a web 86 cam, did a bit of head work, and raised the compression to 8.6/1. with dellorto carbs. It was an amazing boost in hp in a fast reving engine. Made the car much more fun to drive. Changing the cam is no big deal, and I think where most of the increase came from, but be aware that if you do change the cam you won't be able to use the stock injection system. Carbs or aftermarket injection is the expensive part. Too bad the stock cam is such a dog. |
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