I have a 2005 Crossfire 6speed complete stock. Srt6 and Base have the same M112 engine. I always thought that since it was the same engine then if I were to do custom turbo build then the engine could handle the boost. After research, the C32 AMG M112 has a lower compression ratio of 9:1 while my base M112 E32 has 10:1 CR. I want at least 12-14psi. Could I boost with the high compression? Yes, but that requires a dang good tune and still little margin for error, and I'm already using 93 gas and you're going to need more octane if you boost anything higher than 10:1 for the boost I want (from what I understand). PS This will be my first turbo build.

My questions:
1. How can I lower the compression ratio to at least 9.5:1 or lower, the easiest way. I would prefer not to have to change out the piston connecting rod or get a domed piston head (thats a lot of work to take the engine out and I am not that skilled of a mechanic, besides, and the piston rods in the srt6 are $200 a piece, and the base m112 comes with forged pistons which can withstand the boost I want anyways). Could i increase the combustion chamber by swapping/modifying the heads? what other easier ways can I lower the compression ratio in this engine.

2. Has anyone ever freaking done a turbo build for the BASE model crossfire that wants to give me some helpful tips or need-to-knows.

Miscellaneous:
ECU ideas? (should I just go piggyback?)
Will the stock injectors be fine at 14psi boost?
I will be have a shop do a complete custom exhaust from manifold. (has anyone found a turbo header manifold online?).


I'm here for advice. If I am wrong on anything I have stated above as far as facts, point it out if you need to.

 

Try putting 'turbo' in search.
You'll get something like this CLICK and much more.
It'll take at least two weeks to read it all.

 

I have specific questions. Half the threads here are people asking "how do I turbo a crossfire" and "someone let me know when they make a turbo kit for my car so I can bolt it on". I have questions about reducing the compression ratio on this engine so I can build this myself.

 

tighed1 finally got his turbo'd NA back from Corky at Bell Engineering ( BEGi ).
You might try sending him a PM and see if he will talk with you.

 

I will PM him! Thank you!

 

He got it back???
Working ???
It only took 2 weeks to do.

As for compression ratio, idk if anyone makes a thicker head gasket, it will slightly lower c/r.
Or you will have to change pistons, another idea you could do, I have not done but took measurements from a stock piston and can bore out the block past the alusil cylinder coating to the steel walls and use pistons from a ford 4.6 3 valve.
Lots of options, I do not have the measurements handy but if I remember it will raise the engine to a 3.5 liter and can use stock rods, also can use a set of total seal gapless rings.
You can buy some shrink cams or find a good machine shop.
With tuning is the reason nobody turbos our cars.
If I remember a 04 chevy has 18,000 lines of coding and a 04 XFire, has 240,000 lines of coding.
If you can get the coding figured out and make it cost effective, you would probably have a few people driving there cars to you to code to run a turbo.
If it wasn't for matching up the instrument cluster and cruise control, the pentastar v6 bolts up to our nsg370 transmissions, and can code and turbo that, but changing out wiring harness, but then easy to surpass the Torque limitations of the nsg370, which is the same 6 speed used in the wrangler, and surprisingly nobody that I found has strengthened the nsg370 for the wrangler.

 

Yes, it was delivered last month on a flat bed, DJ reports that it does indeed run, but has not elaborated on it's performance yet.
He posted some engine pics :

https://www.crossfireforum.org/forum...tml#post879369

 

So at $40 per hr for 1 guy shop time , I can have my car done for $375k hummmm

 

$40 / hr ??? More like $80 / hr - $750k

 

Pep Boys might cut you a deal. Squirrel Crusher

 

Who does the turbos ? Manny, Mo or Joe ?

 

I double dare you to call up Pep Boy's and ask that question. Squirrel Crusher

 

Is that a standard double dare, or a double dog dare ?

 

A tripple dog dare

 

George, who is Joe? Did he get 'Jack-ed' up and have to change his name?

.

 

Right, getting old and lost a brain cell or two. JACK, not JOE.

 

Sounded good though, " U was bustin a rym". . "But DAT turbo, seem like it cost...mo an mo...yano!

 

Who do dat turbo hack ? Manny, Mo, or Jack ?
There, I can bust a rym when I'm in my prime.

 

Bet Manny would strap on a leaf blower and call it a day. Consider extended warrenty. Hey,I didn't catch that Joe was really Jack either. Squirrel Crusher