New motor ideas, 2.0 liter rebuild (or bigger) Options

[realred914]

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

[Bleyseng]

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.