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> New motor ideas, 2.0 liter rebuild (or bigger)
realred914
post Jul 21 2010, 09:20 PM
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2.0 liter four is apart, needs work. would like some performance upgrade while it is being gone thru. thinking of a displacemnt increase. would like ot be able to run the D-Jet still.

what are the piston size options? draw backs of any (are cylinder walls too thin on any of thge big bore sets? is case machinging required? etc..

what are best brands?


also ideas on valve sizes and cam selection would be appreciated.


looking for a modest perfromance boost, but still able to retain the D-jet system
already have the ealry 2.0 liter exhaust system.

let me know what you all have done, and what is available.

thanks
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Bleyseng
post Jul 23 2010, 04:48 AM
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I could make the 1.7L intake setup work with 2.0L injectors, tune the MPS etc.

The 1.7L intake is smaller robbing hp at higher rpms, but mostly the 1.7L injectors are to small to work in my experience. I guess the motor would have good torque down low to midrange but suffer above 4000rpms.
I have tuned a couple of 1.9L (96x66) Djet engines and tossed the 1.7L injectors as they couldn't provide enough fuel across the rpm range. Mps's that are easy to tune for a 2056 Djet engine are the 049. 037, and 043 as they lack a internal stop ring which gives you more adjustment of the AFR. If you have a good early MPS the cover can be changed to a later one lacking the internal stop ring!

If you are going to spend money of rebuilding a engine, do it right and go to a 2056. Lots of bus 2.0L cranks and rods are out there (yes, they are the same). Get a set of Raby new heads setup with 3 bolts, find a good 2.0L FI setup (I have two extra sets stashed), Raby cam and liters (valvetrain package) and a good MPS.
Assemble it with care and have 120hp and lots of fun and heat for years to come without high oil temps/CHT's burning up your new engine. That 30 mpg is nice too these days.
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orange914
post Jul 23 2010, 09:06 PM
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QUOTE(Bleyseng @ Jul 23 2010, 03:48 AM) *

I could make the 1.7L intake setup work with 2.0L injectors, tune the MPS etc.

The 1.7L intake is smaller robbing hp at higher rpms, but mostly the 1.7L injectors are to small to work in my experience. I guess the motor would have good torque down low to midrange but suffer above 4000rpms.
I have tuned a couple of 1.9L (96x66) Djet engines and tossed the 1.7L injectors as they couldn't provide enough fuel across the rpm range. Mps's that are easy to tune for a 2056 Djet engine are the 049. 037, and 043 as they lack a internal stop ring which gives you more adjustment of the AFR. If you have a good early MPS the cover can be changed to a later one lacking the internal stop ring!

If you are going to spend money of rebuilding a engine, do it right and go to a 2056. Lots of bus 2.0L cranks and rods are out there (yes, they are the same). Get a set of Raby new heads setup with 3 bolts, find a good 2.0L FI setup (I have two extra sets stashed), Raby cam and liters (valvetrain package) and a good MPS.
Assemble it with care and have 120hp and lots of fun and heat for years to come without high oil temps/CHT's burning up your new engine. That 30 mpg is nice too these days.


(IMG:style_emoticons/default/agree.gif) what he said (IMG:style_emoticons/default/driving.gif)
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Posts in this topic
realred914   New motor ideas   Jul 21 2010, 09:20 PM
rick 918-S   Jake or McMark   Jul 21 2010, 09:33 PM
orange914   as far as i know the early d-jet (if it's 1.7)...   Jul 21 2010, 09:46 PM
realred914   as far as i know the early d-jet (if it's 1.7...   Jul 21 2010, 09:54 PM
Tom_T   IIRC - the "Raby 2056 kit" upbuild that ...   Jul 21 2010, 09:53 PM
DanT   take the 94 mm cylinders and have them punched out...   Jul 21 2010, 09:56 PM
realred914   take the 94 mm cylinders and have them punched ou...   Jul 21 2010, 10:00 PM
tradisrad   take the 94 mm cylinders and have them punched o...   Jul 22 2010, 07:23 AM
realred914   [quote name='realred914' post='1346366' date='Jul...   Jul 22 2010, 09:45 AM
DanT   2056 is about it. anything larger like 2270 will ...   Jul 21 2010, 10:02 PM
jeeperjohn56   I did exactly what you want to do, I have a 73 2.0...   Jul 21 2010, 10:06 PM
orange914   if you want to spend the time & energy you can...   Jul 21 2010, 10:23 PM
Bleyseng   I have heard of a 103x71 motor working with Djet a...   Jul 22 2010, 06:39 AM
JmuRiz   Jake's combo for a 2056 can get you 120hp, wit...   Jul 22 2010, 07:57 AM
Jake Raby   Several years ago I proved that the capability of ...   Jul 22 2010, 10:01 AM
Bleyseng   If you want easy build a 2056 with 120hp and to b...   Jul 22 2010, 10:08 AM
realred914   If you want easy build a 2056 with 120hp and to ...   Jul 22 2010, 10:57 AM
Jake Raby   Then call me... :-) (sorry, couldn't resist...   Jul 22 2010, 11:05 AM
realred914   Then call me... :-) (sorry, couldn't resis...   Jul 22 2010, 12:39 PM
BK911   The 1.7 Djet wont work on a 2056?   Jul 22 2010, 05:46 PM
realred914   The 1.7 Djet wont work on a 2056? some parts c...   Jul 22 2010, 06:39 PM
Bleyseng   I could make the 1.7L intake setup work with 2.0L ...   Jul 23 2010, 04:48 AM
orange914   I could make the 1.7L intake setup work with 2.0L...   Jul 23 2010, 09:06 PM
Bleyseng   you can use the 1.8L Ljet too if you want and its ...   Jul 24 2010, 02:37 AM


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