Is it true that 4g63's arent worth getting built?

[97-gst]

i went to my engine machine shop today because i wanted a quote on making my engine a 2.3 stroker. Well the wife (this is a husband&wife buisness) gave me a quote and it totalled around $4000 for the kit, labor, everything . But the owner came from the back of the shop and his wife told him what i wanted to do to my motor and he said "I don't wanna build it". He said mitsubishi's engines are unreliable and they just won't stay together. He said that if i drop a valve it'lll destroy my pistons, rods. Also the shop told me that they will not give any kind of warranty for doing a mitsubishi engine they said if it was a v8 ford it would be a differnet story. Im just wondering if this is true.

 

[rock1t]

you answered your own question.

if it's a mom and pop shop, and all they build are V8's, and ford engines for that matter, then they don't know what our engines are capable of.

seek a second opinion, and $4k is freaking pricey. you can find a built long block in the classifieds on here for 2-3k.

The 4g63 is not unreliable.

 

[97-gst]

see they every kind of motor. He just told me not to waste my money on a mitsubishi. he said he built one before and i guess it blew up on the owner.

 

[360glitch]

Ha, pretty funny story there. Lots of people are ignorant and still think import motors are garbage. I'd just find another shop. You might want to look at purchasing one outside of your local area and having it shipped to you.

 

[GsxEcutioner]

they aint doing something right ^^.

 

[LiquidX]

Yeah, I would find a new shop if he doesn't want to do it and says they fall apart. If he built one and it fell apart then he put it together wrong.

The reason why he said it would destroy the bottom end is because we have what's called "interference" engines. The pistons and valves are at the same point at different times. If you jump time or a belt breaks then those 2 separate times could become "at the same time" causing damage due to collision.

The 4g63 is a straight up power house from the factory. Most other motors out there need sleeve because of how they are built with cooling going around the whole cylinder (honda). We have solid blocks that can take much more power than just about any thing else out there in the same class and then some.

 

[mikhro]

Yeah, I would find a new shop if he doesn't want to do it and says they fall apart. If he built one and it fell apart then he put it together wrong.

The reason why he said it would destroy the bottom end is because we have what's called "interference" engines. The pistons and valves are at the same point at different times. If you jump time or a belt breaks then those 2 separate times could become "at the same time" causing damage due to collision.

The 4g63 is a straight up power house from the factory. Most other motors out there need sleeve because of how they are built with cooling going around the whole cylinder (honda). We have solid blocks that can take much more power than just about any thing else out there in the same class and then some.

^^ couldnt have said it better.......I went through the same crap 4 years ago when I got my first DSM, I took it to various local machine shops and all the answers I got were....."Sorry, we onyl do domestic.. i dont touch those type of engines", "I cant give you warranty on that engine", " We never done that type of work", basically when I explained, what I wanted done, they didnt have a clue what I was saying

My take is, find a shop that has EXPERIENCE on building 4G63's or 420A's (whichever you got)...... even if you have to ship the block, its worth the peace of mind

 

[yepes281]

The 4g63 is THE strongest 4cylinder ever made, you can even google it And honestly if hes talking that bad about our motors, then he doesn't know how to build it right, and i honestly wouldn't let him lay a finger on my motor. Find a reputable shop to get it done at, someone who knows their way around our motors so you dont gotta worry about shit breaking because somebody didnt do something right when putting it together.

 

[rock1t]

you should ask him his thoughts on a LS1.

bet that's unreliable since it doesn't have one of those darn holley quadra double pumping thumping 6 barrel carburetor. Laugh. Oh that makes me giggle.

Find a reputable shop, or read read read and build it yourself.

 

[BLINKY619]

yea man name me a motor that comes stock around 160-200, and can handle up to 500hp without blowing it up...!!!!! im talking about stock pistons, rods, etc. etc.

 

[Guzman08]

are u just rebuilding with the same internals??

 

[Shadow21]

Wouldnt any piston be pretty much ####ed if it were smacked by a broken valve??????????????????????????????????????????????? Thats just him being a ####ing redneck.

 

[dsm-onster]

What a fvcking idiot!

don't follow suit. Talk to ANY other shop. Most will do what you ask. And most know that rods are rods and pistons are pistons. And valves are valves. Eagle rods are the same for v8 or 4cylinder. Just multiply their torque capacity by the number of cylinders. The cranks and bearings and block cases are proven to well over 1000whp.

His excuse not to work on it is rediculous and pathetic. WALK AWAY! . . .'IF you drop a valve'? That's why he's building it. Mitsu motors are in the habit of staying together even though they are interference motors. If he's fvcking b!tching about it being an interference motor, then RUN AWAY!!! He has no expertise in the modern internal combustion engine. And you would be better off pulling your motor out, pulling the head, pi$$ing in the cylinders after a 12 pack, and trying to put it back in sh!t faced.

 

[MY1GDSM]

If you had them build it I'd be worried about " Dropping a valve" as he said. since it such a common thing when people build a motor right. honestly and more seriously it's almost unheard of because of the design of out valve locks unless some idiot put a worn out valve spring in or something.

 

[99gst_racer]

Any machine shop that is that ignorant doesn't deserve to machine/build a 4G63. I don't care if it's free labor - if the guy doesn't know what he's talking about, then he more than likely also doesn't know what he's doing either. Walk away and find someone who does.

 

[MY1GDSM]

A quick two second google search net'd me pleanty of other options in your area
pulaski, Virginia machine shops - Google Search

 

[Calan]

And you would be better off pulling your motor out, pulling the head, pi$$ing in the cylinders after a 12 pack, and trying to put it back in sh!t faced.

Are you speaking from experience on this one Matt?

 

[dsm-onster]

Well, for part of it. . . If you don't pee in the cylinders, it actually runs pretty good

Paul has it right, free labor isn't worth it. Considering free labor is just mucking it up costing you more in the long run. It's actually EASY to a normal competent machinist to build a 4g63. Not down graving what our 4g63 machinists do for a living. But they don't charge an arm, leg, your wifes honor, and your first born to get a nicely prepped motor that can handle upwards of 750whp, either. Take it to someone who wants to work on your motor.

 

[turboglenn]

on the original Q. If they weren't worth building i don't think you'd find as many of them as you do on these forums, and most of which making about 2 times the factory HP on stock internals with built ones ranging from 700 to 1000HP. It just wouldn't happen if they weren't worth it

Find a new machinist. My guy usually does V8's as well but he took my 4g and made it an awesome engine and never once trash talked it, but also wouldn't let me have it until every clearance was PERFECT

 

[2gdsm_nc]

Drive south about 45 min to Elkin, NC to the Napa, Now "Carquest" that machine shop has done 2 of mine no prob; mill head and block- no sanding there, and they have and very reasonable prices,

If i remember right on my now project to do my lower end, clean, bore, hone, install pistons, rings to my gap specs, check if I needed mains honed since I installed arp mains, Beleive it or not "All good". I didn't 100% beleive it either so I had to plasti-gauge it for myself as well, huh lucky me.

Well back to the price 105.00 I about crapped. You can look them up either carquest or Darnell's Elkin, NC. They are very intelligent as far as "Import" motors as well as the Bigger Boys. "I took my 2.4 Pistons in to them and the block, rods, ect, and He already knew what I wanted done without even asking" Then again you may want to call as I'm still on a wait list for my head work to be done. 336-835-6272<ask to speek with someone in the machine shop

I guess thats how you can tell a good shop from a busted one, how much buisness/ return customers they have.

P.S. You answered it yourself, One he built blew up. I mean honestly how hard is it, same principle as other engines just different sizes, specs. follow them. Mitsubishi isn't the only interference engines? Thats alot of lost buisness, guess they are rolling in doe and don't need it!

 

[JusMX141]

Apparently he built one before and i guess it blew up on the owner but he said he would build it

Ummm....guess who WOULDN'T be building my engine.

 

[Tanro]

I would tell him to go eat a dick, the 4g63T is honest to god about the best damn engine every produced.... ever.

I have put 4g engines through, talking overheated and drove it another 11 miles to the next service station to redneck rig the lower radiator hose with a boxcutter and flat tip screw driver, then add some water and crank right up,

Ran them with low oil, not good on the turbo but the engine lived.

They produced scary power when slightly modified and can hold so much power its not even funny.

That guy was probably just and inbred redneck hillbilly and that woman at the counter was probably also his sister... or his mom.

 

[92AWDHX40]

MMM, mine is and always will be.

 

[STM tuned]

There is also other perspectives to the argument. You can ask 10 different people and get 10 different opinions.

Of course it is worth building. Chances are, this guy built one previously and some knuckle head didnt know what they where doing, and blew it up without a proper supporting mods list and tune.
Then said idiot complained that the motor was bad.. making the die hard v8 engine builder want to not bother with "these little 4 bangers."

I had a similar experience with a machine shop on a build. I just shook it off and moved on to someone who wasn't a waste of both our time.

4k for building a motor is a bit tight though IMO.

 

[viprez586]

The shop that did all the machine work on my motor does mainly v8s but they have done 4G63s in the past.
Extremely reputable, they know what they're doing and did a damn good job. I can assemble a motor - the machine work is what gets me.

Like said, Any other interference motor that drops a valve will most likely be screwed, but hell, if the valve drops in any engine - wouldn't you at least be questioning that entire cylinder's overall state of health.