info on dohc swap!!

[allrice4g64]

hi people so just wanted to share some info i found out today. if anybody is considering doing the dohc swap better look into getting the 4g64 dohc headgasket soon i was on the phone with mitsu tday and they said there are only 6 well 5 now 4g64 dohc headgaskets left in the united states. jnz tuning and mapperformance get these gaskets from the mistu warehouses also so looks like they are getting scarse.

[Galanttuner10]

also as a note, any 4g63 head gasket can be substituted as long as you bored the gasket to the proper bore, so dont worry.

[peanotation]

is this really true? if so i will order a spare DOHC headgasket....don't want to based off just one post though...no offense

[allrice4g64]

i don't have proof of this, was talking to the guy from mitsubishi on the phone and when he was looking it up and he said "looks like i can get the gasket but its a special order" then i said how long and he said a week or so. then he went on to say looks to be only 6 left in the united states. probably meaning that they only show 6 left in stock in there warehouses but im sure some performance places and or auto stores have to stock some of these gasket but finding who and where would be kinda a task. otherwise they can probably get some from overseas or i did come across some websites that specially make head gaskets. so for it being 100 percent true i dunno im just going off of what the dude at mitsu said but rather be safe than sorry. it cost me 97 bucks to get it over night shipped and it still took 2 and half days. i went to orielly auto part, carquest, and bumper to bumper and the gasket that comes up for a 94 galant gs dohc is the single overhead cam gasket. i explained this to oriellys and they are contacting their main office to sort it out. would kinda suck if somebody that has a 94 galant gs needed this gasket and they go to a parts store to get it and they give u a sohc gasket. i ended up catching it before i installed it thank god. just food for thought though :)

[allrice4g64]

i guess you could call ur local mitsu dealer and ask how many of these md189436 gaskets they have left or i can tomorrow. as for boring out a 63 gasket not sure how good this would work cause the gaskets have a metal ring where it goes around the cylinder

[Galanttuner10]

like i said, any 4g63 head gasket can be substituted, all you have to do is bore the gasket to match our bore

[allrice4g64]

but there is that metal ring that goes around the cylinder how would u be able to bore it ya know what im saying?

[Galanttuner10]

but there is that metal ring that goes around the cylinder how would u be able to bore it ya know what im saying?

either bore the 63 gasket by just punching it to match( watched the machine shop do it many times) or get an 86.5 bore 63 aftermarket gasket

[raks_22]

well, really i dont think that, some parts to 88's cars, like pistons, gaskets etc, keep in market, why the galant dont xD!

[peanotation]

because who the hell owns a galant??

[Galanttuner10]

its mostly because it was only made for one year and now that is over 15 years old, OEM parts are no longer produced. so once the dealer stock is out, aftermarket and no name is the way to go

[allrice4g64]

ok so i just want to make some stuff clear for people that are doing the headswap and search and may read this post. do NOTfollow this link to do the headswap http://www.galanttuners.com/kb.php?a=64 some of the information on here is not correct. such as it says to use a 4g63 head gasket.... you can but you will have to bore it. just get a 4g64 dohc headgasket. it also has a picture of how to advance timing the picture is NOT correct!!!
http://i922.photobucket.com/albums/ad66/allrice4g64/wrongtiming.jpgthe intake cam has to sit a half a tooth above the exhaust cam. i have had alot of trouble because of the picture on this site. The 4g64 dohc timing belt number is MD182292 and it is a 154 teeth it is one more tooth than the 4g63 timing belt which is 153 teeth, thus is why u have to advance timing a half a tooth on each cam. The headgasket number is MD189436 and should not be bought from any auto parts stores i went through 3 differnt stores and they all gave me the sohc gasket. i highly recomend getting all the parts from a mitsu dealer. Dont make the same mistakes i did.

[Shadow19]

Speaking from experience here. 98% of all the tutorials ive read are wrong. The only accurate ones ive found was from matt (peanotation) from socallifestyle.

[allrice4g64]

once i get everything done and right im gonna take like a full day and write a correct tutorial step bye step picture bye picture. all the incorrect info made it way way way harder than it actually is.

[Shadow19]

yea. I know the feeling. Ive done alot of shit to my car and the in depth tutorials suck ass.

[Galanttuner10]

Speaking from experience here. 98% of all the tutorials ive read are wrong. The only accurate ones ive found was from matt (peanotation) from socallifestyle.

this is so true. he plans on doing the headswap so maybe one day there will be a correct one on it unless me or rice gets to it.

[Galant306m]

I could write one just to boring and long to do lol

[Galanttuner10]

I could write one just to boring and long to do lol

that what im saying. i dont have the time

[Galant306m]

nor have you dont it so.....

[skrap]

Lol

[evil-G-nius]

I wouldnt worry about the head gasket either. If I remember, people have been using the Sonata head as a substitution for the head swap. With that being said, I would imagine you just use one of those head gaskets....those arent discontinued

[allrice4g64]

i know the sonata has the same head but dont they have a 1.8 liter motor though? they made a 1.8 a 2.0 and a 2.4 that all share the same block.

[Galanttuner10]

nor have you dont it so.....

youve always been a dick. sorry my daily driver hasnt had time to be swapped even though every nut bolt belt etc is down if i wanted to slap on a stock head and i know what i have to do for the swap and for damn sure it will be done, but i am building my head and motor without taking the car off the road and making it capable of hold 600hp and be able to do what i want to do.

so in short, fuck off mitch

and skrap hasnt your head swap been underway for over a year now? and mitch your car took forever to do and it wasnt being driven everyday!!

[allrice4g64]

everybody finish there cars and have one big race word!

[Galant306m]

youve always been a dick. sorry my daily driver hasnt had time to be swapped even though every nut bolt belt etc is down if i wanted to slap on a stock head and i know what i have to do for the swap and for damn sure it will be done, but i am building my head and motor without taking the car off the road and making it capable of hold 600hp and be able to do what i want to do.

so in short, fuck off mitch

and skrap hasnt your head swap been underway for over a year now? and mitch your car took forever to do and it wasnt being driven everyday!!

I'm not being a dick you have know it all syndrome and its annoying when you give bad advice!

[Galanttuner10]

I'm not being a dick you have know it all syndrome and its annoying when you give bad advice!

what bad advice did i give mitch?

[mko]

lots of v-sand in here. scrape it off and move on

yes the sonatas came with 1.8L, and 2.0L DOHC, the 2.4L is a SOHC motor and its found in the older sonatas(91-94) and it is a 6 bolt( very rare motor)

The DOHC versions are the same heads, the only differences are the N/A cams and that the 1.8L has smaller combustion chamber which make is perfect for high compression N/A 2.0L or 2.4L engines

The SOHC and DOHC blocks are not the same, I guess they had different casts. Just like 4g64 SOHC and DOHC are not the same. The DOHC block doesnt have the oil passages, so theres no need for passages on the head as well.

[evil-G-nius]

see....what he said! LOL

[peanotation]

this is so true. he plans on doing the headswap so maybe one day there will be a correct one on it unless me or rice gets to it.

shit, i did the headswap a little over a month ago and it is AWESOME.

I've been busy as hell with work and haven't had a free day to get my 3" exhaust ripped out and replace with 2.5". I didn't know there was a demand for a DOHC swap tutorial. You can pretty much figure it out from all the pieces that are floating around, because there isn't one or two that say it all.

Also, I barely took any pics. :-(

All I can say is if you're thinking about it you need to drop what you're doing and actually go do it. Considering how inexpensive it is, and you can knock out an entire timing belt job at the same time, it's more than worth it. It's not just the slight power gain, but the entire RPM band is significantly more powerful as well. The car is A LOT more fun and gear pulls down empty stretches of road never felt so good. The powerband is a lot more direct than it was with a turbo too. I imagine if you turboed a GS swapped 7G you could probably take anything after you paid over a grand in tires, because shit, you need good tires with the POWA.

One surprise I ran into after I did it was the tach gauge. You need a GS speedo/tach cluster. There is no way to use any other tach. You can do the swap without one, you just wont be able to see RPMs ever.

[mko]

pics or ban

[skrap]

youve always been a dick. sorry my daily driver hasnt had time to be swapped even though every nut bolt belt etc is down if i wanted to slap on a stock head and i know what i have to do for the swap and for damn sure it will be done, but i am building my head and motor without taking the car off the road and making it capable of hold 600hp and be able to do what i want to do.

so in short, fuck off mitch

and skrap hasnt your head swap been underway for over a year now? and mitch your car took forever to do and it wasnt being driven everyday!!

Im having a Kid... Nuff said

[Galanttuner10]

Im having a Kid... Nuff said

i understand shit comes up man. my dad just went through a divorce and i got kicked out of my house last year and have been living on my own working everyday trying to make ends meet.


and matt, please post pics and maybe a couple things on rewiring for the new sensors

[peanotation]

ok word, on monday morning i will post up all the details, and maybe write a quick little guide. it's relatively easy, easier than most projects i think, just a lot of little things to do, and i can't stand setting the auto tensioner on timing belts. i feel like i have to do it 20 times to get it right and even then the whole design just feels so sketchy to me.

i had the luxury of getting an official GS head, from DOHCStunr to be exact. many many thanks John..... had it surfaced, sandblasted, viton rubber valve seals, and everything double checked. had a couple stuck lifters before...
http://img8.imageshack.us/img8/2734/img5843z.jpg
http://img43.imageshack.us/img43/5233/img5842sj.jpg

i'll post all the pics and everything on monday

[microgalant]

hi people so just wanted to share some info i found out today. if anybody is considering doing the dohc swap better look into getting the 4g64 dohc headgasket soon i was on the phone with mitsu tday and they said there are only 6 well 5 now 4g64 dohc headgaskets left in the united states. jnz tuning and mapperformance get these gaskets from the mistu warehouses also so looks like they are getting scarse.

Why not use cometic?

[allrice4g64]

Why not use cometic?

you can :045:

[Galanttuner10]

Why not use cometic?

i wont use cometic, my buddy went through 3 on his evo and another buddy blew one in his gst after like 2k miles. they switched and havent had issues since.

[allrice4g64]

i have kinda a bonehead question. why do u actually have to advance timing on the cams a half a tooth just because the 4g64 gears sit in those spots? so if the crank is at tdc where it is suppose to be and the cam marks line up where they are suppose to shouldnt it run fine? what is the cause that you actually have to advance the gears. your using the stock 4g64 dohc belt, the head is the same as a 4g64 dohc, everything is essentially the same. ya i know may be a stupid ass question but its been bugging me to find out why.

[Galanttuner10]

yes the 64 cam gears line up with the timing marks. the 63 gears wont because the 64 block is 6mm taller, hence the need for an advance

here
http://www.4g64.com/users/raycer97/2g_parts.htm

[allrice4g64]

ok gotcha ya know now that i think about it if i time my car with the marks a half a tooth advanced on each cam like im suppose to it runs to advanced and the cas has to be all the way to the left for it to run good. if i time it with the the marks a half a tooth retarted on each gear it runs the best with the cas all the way to the right sooo best case scenario i line the marks up not advancing anything and it runs good. how would this make sense.

[microgalant]

i wont use cometic, my buddy went through 3 on his evo and another buddy blew one in his gst after like 2k miles. they switched and havent had issues since.

I'm using cometic the whole time, running 20psi of boost, never blew.
Once my car overheated due a waterhose failure, almost got into hot, well comectic is still alive...
I had have a problem and I thought it was a problem with the headgasket, but it was a head problem, changed the head and no problem since....