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 |
r_towle |
Dec 12 2005, 12:04 PM
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#21
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Custom Member Group: Members Posts: 24,623 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
does this cam you speak of help a 2.0 liter djet, or is this for carbs??? Rich |
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Cap'n Krusty |
Dec 12 2005, 12:09 PM
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#22
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
My post went in much earlier in the discussion than it appears, Jake. What I meant was "ordinary" non-stock cams don't work with L jet, despite what the salesman tells you. The Cap'n |
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Jake Raby |
Dec 12 2005, 12:59 PM
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#23
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
The cam I was speaking of was developed specifically for stock EFI. I have one for D jet and one for L jet since their characteristics are different..
I have 30+ cams for carbs according to head work and etc... Yes cap'n I know all about those salesman that have clean hands |
MartyYeoman |
Dec 12 2005, 03:36 PM
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#24
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Senior Member Group: Members Posts: 1,525 Joined: 19-June 03 From: San Ramon, CA Member No.: 839 Region Association: Northern California |
I have this P&C combo with L-jet on my motor.
I like the quick revs it produces. Very fun to drive. I only wish I had used better quality P&Cs though. Jake, I haven't forgotten to call. Just experiencing schedule delays.... |
LouisCypher |
Dec 15 2005, 04:21 AM
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#25
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Newbie Group: Members Posts: 35 Joined: 12-February 05 From: Germany Member No.: 3,591 |
Here in Europe there was an 1.8 engine (code: AN, same as 412S) with 85 HP and two 40 Solex carburettors. The compression was as high as 8.6. The cam should be the same in all stock engines!? Wouldn't it be possible simply to increase the compressiĆ³n of the EC engine to the specs of the AN engine to get 85 HP? Cheers, Louis |
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Jake Raby |
Dec 15 2005, 11:23 AM
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#26
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
The cams are NOT the same...
There were 11 stock cams and the AN engines I have torn down had their own camshaft. |
LouisCypher |
Dec 15 2005, 11:45 AM
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#27
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Newbie Group: Members Posts: 35 Joined: 12-February 05 From: Germany Member No.: 3,591 |
Good to know. Thank you, Jake! |
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Al Meredith |
Dec 15 2005, 06:03 PM
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#28
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Senior Member Group: Members Posts: 967 Joined: 4-November 04 From: Atlanta, ga Member No.: 3,061 |
I have a new set of Euro 1.8L P&C's. They have a dombed piston like the 1.7L. They are still in the box. I also have a set of 1.8 flycut and opened up heads. Len Hoffman installed oversized seats for me because these heads have duel springs. $850 for both and I'll through in a set of lightened rods. Al
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Brando |
Dec 15 2005, 06:40 PM
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#29
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BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
Best bang for your buck would be to use a complete 2.0 bottom end and throw your 1.8 heads on it. Putting a lot of money in the heads won't do you too good with the OEM FI and cam setup since making radical changes to the head won't help with that anemic FI cam. Once you've got your 1.8 heads on a 2.0 bottom end with 96mm pistons, go with 912E injectors, they're larger and have the proper variables to use with your L-Jet system. You shouldn't even have to adjust your Air Flow Sensor (barn-door flapper) with that combination. Costs less than a complete 2.0 and will give you a good 90-100 HP. Don't expect miracles with L-Jet though.
I THINK you may need to get your case opened up for those 96mm cylinders to slide right in. I'm not 100% sure about that, though. It's only money, right? |
Jake Raby |
Dec 16 2005, 10:39 AM
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#30
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
96mm piston/cylinder kits are drop ins... No machining required.
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pnewman |
Dec 16 2005, 12:43 PM
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#31
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Member Group: Members Posts: 371 Joined: 15-February 05 From: Lincolnshire, IL Member No.: 3,606 Region Association: Upper MidWest |
W/ 96 mm p & c kits should I do anything to the heads to maximize the benifit?
Will I need to do anything to the OEM EFI Ljet system? i.e. will it run to lean or too rich w/ the 96's? thanks for your input Pete |
Brando |
Dec 16 2005, 01:05 PM
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#32
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BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
^ That's why I suggested the 912E injectors. They're sized for a 2.0L and are designed for L-JET. You shouldn't have to adjust your Air Flow Sensor, but I'd get it on a dyno or a flexible gas analyzer to see if you are running rich or lean through the RPM range once you make the swap. As for the heads, a valve job, new seats and stainless valves should do you fine. Having radical work done to 1.8 heads for OEM FI is a moot point, unless you want to go with megasquirt and then you get into cracking the case for a cam change. |
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Jake Raby |
Dec 16 2005, 02:03 PM
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#33
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
The STOCK 1.8 head is good for up to 2200ccs, as long as you don't wanna rev it to 7K...
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sean_v8_914 |
Dec 16 2005, 11:52 PM
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#34
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
slap it together with 96mm and go! check deck height and CC your heads, of course
my 1.8 with L-Jet and 96mms ran great. I set it to 8.3 to 1 I dont know how much it helped but I also match ported teh exhaust ports to teh heat exchangers. I used a used exh copper gasket as a guide. I also blended the seats and that nasty short radius on the exhaust port Jake: how much do you think all that grinding helped? |
914werke |
Dec 17 2005, 03:46 PM
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#35
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"I got blisters on me fingers" Group: Members Posts: 10,517 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest |
Is the cam differnt between a OE Ljet 1.8 and OE Djet equiped 1.7? I assume it would be. Which would be preferential?
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sean_v8_914 |
Dec 18 2005, 10:23 AM
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#36
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
insert popcorn eating smiley face here:
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