2.2L VS. 2.5L Please! Help Me Decide On My Rebuild

[Tim_K]

And that Honda was 1000 pounds lighter than my Turbo Spirit. A quick check at prestage.com says he has 190 wheel horsepower. For $6 grand. Not a good deal if you ask me.

[The Barron]

Quote:

Originally Posted by DirectConnection What I don't understand is that you want an auto for mainly highway races? 5-speed with a 2.2 would be the better choice then.

*sigh* My wife. She really wants to drive it too. She despises manuals. We had to come to a compromise..married life is all about compromises.

So I do to the auto the most I can. It might slam gears..but its still an auto.. hehe.

[moparzrule]

Quote:

Originally Posted by Tim_K And that Honda was 1000 pounds lighter than my Turbo Spirit. A quick check at prestage.com says he has 190 wheel horsepower. For $6 grand. Not a good deal if you ask me.

Your car also has 200 more ft/lbs of torque(atleast)! And everything for Honda's is insanely expensive, 6K is actually doing pretty well if going N/A.

[glhsken]

Quote:

Originally Posted by Tim_K A 2.5 has 13.3% more cubic inches to feed than a 2.2, so to have a fair comparison, the head on the 2.5 must flow 13.3% more than the 2.2 head.

LOL... That whole post made me roll on the floor laughing. That line was PARTICULARLY funny.

Tell ya what Tim. You find a head that provides 13% more flow for the 2.5 and then tell us about it.

[Ben Paquin]

Quote:

Originally Posted by glhsken LOL... That whole post made me roll on the floor laughing. That line was PARTICULARLY funny. Tell ya what Tim. You find a head that provides 13% more flow for the 2.5 and then tell us about it.

Yeah, Tim you need to understand the whole point about a stroker is that it "sucks" air longer (stroke). So that means with the same head flow, a stroker will make more power until its stroke becomes a handicap (high rpm). that means with a stroker you get about the same peak HP but a lot more torque. Therefore more average HP through the powerband.

[iTurbo]

Quote:

Originally Posted by boostedscooby How would the 2.5 do with a lower final drive ratio then?? I see that Gary's last setup consisted of 2.5 engine with A413 tranny and 2.76 final gear ratio. Won't this setup make the torque more usable?

I have a fairly high torque 2.5L (270 ft/lbs @ 14 psi) in my Omni GLH. I'm using an A525 witha 3.05:1 final drive ratio. I love the way it's geared, although it makes so much low end torque that it really doesn't matter anyway. I really should have a 2.2L in the car, considering it's an Omni. The low FD makes for a lot of MPH gained in every gear and spreads the low end torque out somewhat throughout the RPM range.

[Tim_K]

glhsken: Any 287, 445, or 782 head can do it. It has to be ported!

How many people build a 2.2 or 2.5 and don't do ANYTHING to the head to make it flow a little more? Even a mild valve bowl area smoothing out?

[Mopar_Nutz]

Quote:

Originally Posted by The Barron *sigh* My wife. She really wants to drive it too. She despises manuals. We had to come to a compromise..married life is all about compromises. So I do to the auto the most I can. It might slam gears..but its still an auto.. hehe.

From what I've heard, a few weeks with a RMVB will have her begging for a nice smooth shifting manual tranny

[glhsken]

Quote:

Originally Posted by Tim_K glhsken: Any 287, 445, or 782 head can do it. It has to be ported! How many people build a 2.2 or 2.5 and don't do ANYTHING to the head to make it flow a little more? Even a mild valve bowl area smoothing out?

Really, any head can be ported??? Good to know. You coutinue to miss the entire point.

Ben, Great 'splaination

Wow. This must be a hard decision - and probably a question that was asked plenty of times - but this one is kinda different - since I haven't got a clear answer since they were comparing 2.2L Turbo II vs 2.5L turbo I, but say if I were to modify and equip the 2.5L with the turbo II and intercooler and 5-spd tranny from a 2.2L...

I have a 89 Dodge Daytona ES 2.5L Turbo I with auto tranny
and a 88 Dodge Daytona Shelby Z 2.2L Turbo II Intercooled with 5-spd manual tranny.

By combining and mixing parts together - would this be the best configuration?

Using the 89 ES Body (I like the style better and the full bodykit):

Modify the 2.5L engine and equip it with the Turbo II and intercooler from the shelby 2.2L engine... and replacing the auto tranny with the 5-spd tranny?

making the car out to be:

89 Daytona Shelby Z ES with 2.5L Turbo II Intercooled with 5-spd tranny

Is this the best setup or should I just replace the 2.5L with the whole 2.2L Turbo II Intercooled and 5-spd tranny?

Would this setup give both good torque and hp range?

[turbovanman]

Quote:

Originally Posted by RiccoFX Wow. This must be a hard decision - and probably a question that was asked plenty of times - but this one is kinda different - since I haven't got a clear answer since they were comparing 2.2L Turbo II vs 2.5L turbo I, but say if I were to modify and equip the 2.5L with the turbo II and intercooler and 5-spd tranny from a 2.2L... I have a 89 Dodge Daytona ES 2.5L Turbo I with auto tranny and a 88 Dodge Daytona Shelby Z 2.2L Turbo II Intercooled with 5-spd manual tranny. By combining and mixing parts together - would this be the best configuration? Using the 89 ES Body (I like the style better and the full bodykit): Modify the 2.5L engine and equip it with the Turbo II and intercooler from the shelby 2.2L engine... and replacing the auto tranny with the 5-spd tranny? making the car out to be: 89 Daytona Shelby Z ES with 2.5L Turbo II Intercooled with 5-spd tranny Is this the best setup or should I just replace the 2.5L with the whole 2.2L Turbo II Intercooled and 5-spd tranny? Would this setup give both good torque and hp range?

Guess you didn't read the entire post, lol!

both combos will give good torque and HP, the 2.5L will give more bottom end grunt and the 2.2L hits harder higher in the rpm department.

To convert your 2.5 to a T2 is easier than you think, all you have to do is install the T2 intake and have the T2 computer recalibrated for the 2.5's different spark and fuel curves!
For more info, go to www.thedodgegarage.com and read this site 3-4 times, let it soak and read it again. Good luck and have fun!

[Bearcat]

My 2 cents on this take
I own both types of cars 1 a 2.5L TII and a 2.2L TII car, both have their power moments and their personalities. I don't race on the track like most of the OVC, I like to watch amd listen for the enjoyment but I have been around in the Turbo world for almost 20 years now, for a daily driver for good power, choose the 2.5L because it has the power to move your car faster off the line and the torque is a nice feeling but most of all the gas mileage is BETTER if your cruising. If your not pounding the 2.5L and trying to race it down the track, this motor will hold up well.
A 2.2L will rev higher and as Ken said the pistons are alittle most forgiving is Detonation happens at high boost. If your driving a heavier car a 2.2L will BOG down on take off and will be forced to work harder to do the same job a 2.5L can do with little effort. So we weigh Take off power(Torque) and smooth power band which the 2.5L can give but stick 15 pounds and beyond and I'm sure the grin on your face will come off after a week or two :-) or is that a bottle of Emztye on the dash?
After driving to Kalamazoo from Dayton in the 2.2L car, gasmileage was fair at 36mpg , however my 2.5L car will do 37-38mpg. power to go to the higher rpms was there(2.2L)..but for a quicker dance to the 5500 the 2.5L will make you happy in the
Daytona and larger cars. 2.2L for smaller..

I think I said enough..Good Luck in your choice and either way you go, I think you will be happy with the results!

Mark

Thanks for the info bearcat!
Also, I have a story to tell you guys with my 2.5...
I was racing a Camaro and definetely jumped on him of the line and few a few blocks - but then the 2.5 topped out and he passed me... it went from the most exciting feeling kicking his ass at the start and then feeling horrible and embarrased when he passed me when I topped out... If the 2.2 can just enough stay ahead off the start and hold it - that would be great! So far I check throughout the threads and the 2.2 looks like the one to go with... I guess the better question to ask and would probably make decision would be...

What would be easier? What would be cheaper?
- modifying the 2.5L to handle and hold better at top end?
or
- modifying the 2.2L to have more bottom end torque?

Thanks for all the great info on this forum!

-Ricco
85 Dodge Daytona Turbo Z 2.2L Turbo I 5-spd
88 Dodge Daytona Shelby Z 2.2L Turbo II Intercooled 5-spd
89 Dodge Daytona ES 2.5L Turbo I Automatic
95 "Chrysler" Neon 2.0L Automatic

[Bearcat]

The one that NOBODY has said is a 2.2L bored out .30 over.. :-) now you get the REV power and more torque too boot!

[glhsken]

Quote:

Originally Posted by Bearcat The one that NOBODY has said is a 2.2L bored out .30 over.. :-) now you get the REV power and more torque too boot!

No.. not true. that extra 1-2 cu inches does little to nothing.