2.2 ohv questions - Performance Forum

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2.2 ohv questions
Wednesday, July 21, 2010 8:24 PM
I'm working on a 96 cav with the LN2 motors. I was trying to list out the parts for a n/a setup this is what i have in mind. 98 engine with the 96 head and intake. Porting cylinder head, and intake, bored t/b with 2.3 plate. 1.6 roller rockers, pacesetter header, 50-75 shot nitrous, full exhaust, motor mounts remove a/c and pwr steering (this is not a daily drive just a car thats sitting around to play with). It has the 3spd auto trans.
I know that the engine with head swap will raise compression, my research shows it will be about 11.5 to 1 is that correct?
Will there be valve clearance with the 1.6 roller rockers?
I heard the the 96 you cant use a programmer on, does anyone make offset crank keys to retard the timing for the nitrous?

This is just a start, mostly wondering how long it would hold up but eventually I'm going to do the whole thing with eagle rods, and forged pistons.

thanks

Re: 2.2 ohv questions
Wednesday, July 21, 2010 8:35 PM
The '96 head won't line up right on the '98 block. Better off using '98 pistons in the '96 block.
You will need a spacer for the rollers.
Crank offset key.
To tune it you can either swap down to a '95 manual pcm and burn chips, or swap to a '97+ and use HPT. '96 is S.O.L..
Opening up the top end is a good idea. They are fairly restrictive up there.

Sounds like you have a decent plan though. Hopefully one of the older 2.2 guys can chime in



Re: 2.2 ohv questions
Wednesday, July 21, 2010 9:48 PM
no problem on piston clearance w/ the rockers, even w/ .010 off the head to clean it up. And yes your CR is just about right on.
Re: 2.2 ohv questions
Wednesday, July 21, 2010 10:39 PM
have a forged long block and potted head for sale all ohv. Pm if interested.



Re: 2.2 ohv questions
Thursday, July 22, 2010 3:07 AM
thanks guys, guess now i have to get the garage cleaned out so i can get too work
Re: 2.2 ohv questions
Thursday, July 22, 2010 9:17 AM
Mike wrote:The '96 head won't line up right on the '98 block.
Say what? [citation needed]
Mike wrote:Better off using '98 pistons in the '96 block.
I agree, but for a different reason, the cam. Also, you wouldn't need a whole 'nother engine.
Mike wrote:'96 is S.O.L..
There is always a stand-alone. Megasquirt being the most logical choice. Cheaper than HPT too...
Mike wrote:Opening up the top end is a good idea. They are fairly restrictive up there.
97- isn't as bad as 98+, but a good port is certainly never a bad idea.




fortune cookie say: better a delay than a disaster
Re: 2.2 ohv questions
Thursday, July 22, 2010 3:00 PM
OHV notec wrote:
Mike wrote:The '96 head won't line up right on the '98 block.
Say what? [citation needed]

Didn't the water passages change specifically? I know they are going to bolt up the same, and still technically fit. Excuse my mistake if it can be used without issues.

OHV notec wrote:
Mike wrote:'96 is S.O.L..
There is always a stand-alone. Megasquirt being the most logical choice. Cheaper than HPT too...

True, But most people won't like messing with MS. Especially if you have never used it before. I don't know if the OP has used it, but anyone can still learn how to use it



Re: 2.2 ohv questions
Thursday, July 22, 2010 3:16 PM
Mike wrote:
OHV notec wrote:
Mike wrote:The '96 head won't line up right on the '98 block.
Say what? [citation needed]
Didn't the water passages change specifically? I know they are going to bolt up the same, and still technically fit. Excuse my mistake if it can be used without issues.
The flow from (or maybe it's 'to'?) the head is different, just need to use the correct headgasket (needs to match the head itself).
Mike wrote:
OHV notec wrote:
Mike wrote:'96 is S.O.L..
There is always a stand-alone. Megasquirt being the most logical choice. Cheaper than HPT too...
True, But most people won't like messing with MS. Especially if you have never used it before. I don't know if the OP has used it, but anyone can still learn how to use it
Fair enough, but hardly "SOL"...




fortune cookie say: better a delay than a disaster
Re: 2.2 ohv questions
Friday, July 23, 2010 12:30 PM
for the 98 pistons do i need the connecting rods also or can i just order a set of pistons and rings?
i picked up a set of 2200 top feed injectors and fuel rail, does anyone have pics of the conversion?

and for the upper intake a friend of mine said he'd make one for me (works for a machine shop) with a flange to mount a different throttle body. should i increase the plenum volume which should increase top end, or a slightly decreased volume for mid-range?
i haven't seen any dyno sheets on the stock motor so i'm not sure which way to go.
Re: 2.2 ohv questions
Friday, July 23, 2010 12:56 PM
Stock pistons? If so, just grab the stock rods with them. That way you don't have to have a shop press the wrist pins out and in.
Top-feed pics are out there from a couple people, just search this forum and the Boost forum.
Definitely increase the volume. It's hard though because of the bolt locations to connect it to the lower manifold.




fortune cookie say: better a delay than a disaster
Re: 2.2 ohv questions
Friday, July 23, 2010 1:02 PM
I do believe the 2200 pistons will work with the 2.2 connecting rods. But as Notec said, It is easier to keep them in one piece.

Here is a pic of a top feed setup on a pre '98. The main thing is getting the mounting tabs in the correct spot. There is also a space so the TB can open up all the way.




Looks like he just drilled and tapped new holes for it. I have seen others who have bent the tab back to the stock bolt location also.

As far as the plenum, I don't know about that.



Edited 1 time(s). Last edited Friday, July 23, 2010 1:03 PM



Re: 2.2 ohv questions
Friday, July 23, 2010 1:44 PM
Mike wrote:The '96 head won't line up right on the '98 block. Better off using '98 pistons in the '96 block.
You will need a spacer for the rollers.
Crank offset key.
To tune it you can either swap down to a '95 manual pcm and burn chips, or swap to a '97+ and use HPT. '96 is S.O.L..
Opening up the top end is a good idea. They are fairly restrictive up there.

Sounds like you have a decent plan though. Hopefully one of the older 2.2 guys can chime in
what is the diference between the 96 pcm and the 97?
Re: 2.2 ohv questions
Friday, July 23, 2010 1:46 PM
matthew boger wrote:
Mike wrote:The '96 head won't line up right on the '98 block. Better off using '98 pistons in the '96 block.
You will need a spacer for the rollers.
Crank offset key.
To tune it you can either swap down to a '95 manual pcm and burn chips, or swap to a '97+ and use HPT. '96 is S.O.L..
Opening up the top end is a good idea. They are fairly restrictive up there.

Sounds like you have a decent plan though. Hopefully one of the older 2.2 guys can chime in
what is the diference between the 96 pcm and the 97?


two completely different computers.



JBO Stickers! Get yours today!
Re: 2.2 ohv questions
Friday, July 23, 2010 1:57 PM
matthew boger wrote:
Mike wrote:The '96 head won't line up right on the '98 block. Better off using '98 pistons in the '96 block.
You will need a spacer for the rollers.
Crank offset key.
To tune it you can either swap down to a '95 manual pcm and burn chips, or swap to a '97+ and use HPT. '96 is S.O.L..
Opening up the top end is a good idea. They are fairly restrictive up there.

Sounds like you have a decent plan though. Hopefully one of the older 2.2 guys can chime in
what is the diference between the 96 pcm and the 97?


'96 is the half-breed OBDI/OBDII. '97+ is full on OBDII



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