2g 2.4L 4g64 7-bolt Bottom End Swap.

[Big Red 211]

Would a 6 bolt 4G63 oil pan fit on a 7 bolt 4G64 block?

I'm don't think they are interchangeable. 6 bolt pans buldge out at the front of the motor, 7 bolts are dented in. That's an easy way to tell if a motor is a 6 bolt or 7 bolt with the engine still in the car.

 

[XakEp]

Heres the list I'm using for my 7bolt buildup... Did I miss anything?

crank for 7bolt 4g64 - www.eagleautomotivewarehouse.com - CSMI24 - 300$
4g64 7bolt block - 175$ shipped
pistons for 4g64 .020 over - 7 bolt - PAMI24 - 158$
Rods for 7bolt 4g63 - stock - http://www.groupbuycenter.com/buy.aspx?id=13420 - 359$
front case - 7bolt 4g63 - http://www.diamondstarmotorsport.com/engineparts.shtml - 265$
5 hex head plugs - to plug oil holes
Rebuild kit 7bolt 4g63 - 95 from Machv - 199$
MD182292 - the timing belt I will need for the 4g64 motor
Ralliart Metal Headgasket
Freeze Plugs - 5.37
Cylinder Head Bolts - ARP - 98$
Balance Shaft Eliminator kit - 50$

 

[genxxxracer]

What kind of pistons can you get for 158. That sounds too cheap. I think the weisco ones would be a better choice but those seem to be around 400 including rings. My block is still in the machine shop as i dont have the money for the pistons and such. You also should consider getting the oil return line from turbochargers.com since the increased deck height will make it tough to stretch the stock metal hard one. It also makes install easier when you have braided lines to the turbo. Otherwise it looks good on paper,but I havent finished mine so I couldnt say for sure.

 

[XakEp]

I'm going to stick with the stock 4g64 pistons - hence the 158$ pricetag. I'm not going to be pushing huge HP with this car anyways (its my daily driver) - the 1973 Duster is going to be the monster buildup.

 

[nc_99_99]

Just so you know, those pistons are good for nothing more than 10psi. IMO they are not strong enough for turbo duty unless you aren't doing a rebuild which you are. At least lower the compression and find a piston meant for turbo use. The tops on those pistons are just to thin.

Nathan

 

[XakEp]

Can I use 4g63 2G stock pistons?

 

[genxxxracer]

Not gonna be near big enough. Id go with custom ones from weisco or you can get ones made for the pt cruiser that are an upgrade. Not stock pt cruiser ones but the ones they make as an upgrade. I think they are cheaper than the weisco ones.

I hope youve had a machine shop check out the block before ordering anything. If the block has issues and needs to be bored .020 over because of damage then you need to have a piston made for that size. Im waiting to see exactly how big the current bore is on the used block I have and having them check it to see if it just needs to be honed or if boring is neccessary. Ive heard of people make the mistake of ordering the pistons to early and then end up with ones that are too small because of the resizing of the cylinders that had to be done. Good news is if they have to bore it you could end up with a 2.5 instead of 2.4. Id do some more research on correct piston size if I were you before spending anything on pistons.

 

[nc_99_99]

Id go with custom ones from weisco or you can get ones made for the pt cruiser that are an upgrade. Not stock pt cruiser ones but the ones they make as an upgrade. I think they are cheaper than the weisco ones.

What??? Since when is there a mitsubishi 2.4liter in a PT cruiser? Did I miss something?

 

[XakEp]

Anyone have any vendors that would have the pistons I need in stock? 8.5:1 CR, .5mm over and 22mm wrist pin...

 

[aero_sallee]

Thats exactly what I need also. I'm especially interested in wiesco pistons if anyone knows where to get the 0.020 over, 8.5:1 22mm pin wiesco's or even ross's. I'm wanting to keep the comp down for the crappy 91 octane here.

 

[Big Red 211]

Not gonna be near big enough. Id go with custom ones from weisco or you can get ones made for the pt cruiser that are an upgrade. Not stock pt cruiser ones but the ones they make as an upgrade. I think they are cheaper than the weisco ones.

Does that mean the pistons in the turbo PT Cruiser has the right dimensions to use in our 2.4L?

 

[DSM mechanix]

Originally posted by Big Red 211
Does that mean the pistons in the turbo PT Cruiser has the right dimensions to use in our 2.4L?

I think so.

 

[genxxxracer]

Read the entire thread, someone has already talked about using the pt turbo pistons.

 

[talonted_one]

you guys have to also remember ...if you use pistons other than a the hybrid custom pistons, you will ask your machinist to cut in the vlave reliefs.

 

[nc_99_99]

The PT cruiser uses a chrystler 2.4l not a mitsubishi 2.4l. Its like saying 240a pistons fit a mitsubishi 2.0 because they are both a 2 liter.

 

[genxxxracer]

Please do some research and provide proof that something doesnt work other than you dont think so.

First of all read the entire thread. Then check out other sites that talk about the 2.4 conversion for DSM's. I never said that the pistons work just because a 2.4 is a 2.4. It just so happens, and I know this is hard to believe, but they do work and are the same size. If I am wrong and you are right then you better tell all the people running those pistons to take apart their engines because you think the shouldnt work. I never said the engines were the same only that the pistons were the right size and have been proven by others to work. This is the extreme tuners forum where usually people talk about in depth advanced issues and not a place for someone without anything useful to say to voice an opinion that just so happens to be wrong.

 

[98TsiAWD]

Originally posted by nc_99_99
The PT cruiser uses a chrystler 2.4l not a mitsubishi 2.4l. Its like saying 240a pistons fit a mitsubishi 2.0 because they are both a 2 liter.

From the site rules, in BOLD type writing every time you post.

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[Pitbullgst]

I have a sohc 2000 or 99 galant 4g64 laying around. I wanted to pull my 7-bolt and put in a 6-bolt 4g63 but if I can use the 4g64 I have already I will just build it. Can I use this engine?

 

[genxxxracer]

I dont see why you couldnt use it. Just follow the guide and make sure you plug the holes in that block and you should be good to go.

 

[MNGSX]

Originally posted by Pitbullgst
I have a sohc 2000 or 99 galant 4g64 laying around. I wanted to pull my 7-bolt and put in a 6-bolt 4g63 but if I can use the 4g64 I have already I will just build it. Can I use this engine?

Yes but depending on the cars use I'd got one of two ways.

Street full 2.4 reuse OE parts less pistons.

Race... use a 2.0 crank in the 2.4 block.

This is all simplified PM for specifics

Overbore as necessary use standard 2.4 pistons and long rods. Or use 4G63 stroker pistons with really long rods but get them in 2.4 bore.

It's all a matter of when the turbo spools.. the extra .2 or so liters of a 2.0 crank in a 2.4 block combined with the long rods really breaths well at mid to upper rpms. Hence about 2.1 to 2.2 liter engine. You will get better cylinder filling at those upper RPMS.

There are other more radical ways to do a short (2.0) stroke engine yet gain displacement

It's about matching all your components to the same RPM. Laggy turbo? use a G63 crank in the G64 block... Smaller turbo or midsized bb turbo? go full 4g64. I consider a EVO 16g a "smaller" turbo...

Anything that was marginal on a 2.0 may spool quicker on a 2.4 but the engine will lose VE about the same time a turbo that big reall gets to be fun.

A stroker will make more lower rpm tq and spool a bit sooner your average turbo.

HOWEVER... You probably can run a larger turbo on a 2.1 - 2.x (G63 stroke) engine since you are actually flowing more air thru the engine at higher rpms than a stroker. A long stroke cannot fill the cylinders as succesfully with air at high rpms as a shorter stroke..

Like why Yamaha R1 motors don't have harley stroke lengths.

 

[Pitbullgst]

What shops could I send the block to to get the 2.4 machined for the 1g oil squirters? Where could I buy some 1g oil squirters? Also my engine will be for street use. I am wanting to use either a big 16g, a evo III 16g, or a big t-28. any other suggestions?

 

[HybridAWD]

Originally posted by Big Red 211
Does that mean the pistons in the turbo PT Cruiser has the right dimensions to use in our 2.4L?

ok one more time. the PT Cruiser Pistons Will Work the only modification i did the the piston was mill them all about .010 off the top. there is more than planty of piston to valve clearance, and you do not need to cut any extra valve reliefs. Im driving my car with them as we speak and spooling a 60-1 at idle. Thank you

 

[MNGSX]

You are not spooling at idle.

The throttle is closed limiting airflow into the engine to almost the same amount of air a 2.0 takes in at idle.

Now at WOT you may spool a 60-1 with the same turbine wheel and housing around 25% sooner but your peak power will also occur alot sooner and be pretty narrow a powerband.

IMHO strokers are great for running mid sized turbos on the street or autocross. They shine there. Just bore it via G64 block and leave the stroke alone if you care mostly about 1/4 mile ET's.

 

[HybridAWD]

2.4L is good for anything whether it be a daily driver or drag car or strictly autocross. it's just easier to make power.

 

[MitsuE95GST]

Just thought I would share my page with you guys on the subject, I update it regularly.

http://www.extremeevolutions.com/4G64_buildup.htm
If anyone as suggestions, or something they think would be helpful on my site send me an e-mail, I would like to have a one stop page that covers the build up.

I never knew about the turbo PT pistons, if anyone knows of some good places to get them from please send me an e-mail. I would think that performance shops that do upgrades for the turbo versions would have some stock pistons laying around after a customer upgraded. Part numbers would be useful if someone has them so that you can request them direct from a dealer ship.