4g63 7 bolt engine

[microgalant]

My friend bought a 7 bolt jdm 4g63 engine.
How can we be sure, if the engine is a evo 3 engine or a 2gen engine?
And does the jdm 7 bols 4g63 gets crankwalk?

 

[rb25det510]

NOOOO!!! an evo 3 motor is a 7 bolt and yes the jdm 7 bolts can/will get crankwalk

 

[VETTE_50_TH]

An evo 3 is def. a 7 bolt. They do have a cyclone intake instead of an eci IM. As far as crankwalking, any motor can crankwalk, hell, my 6 bolt could crankwalk tomorrow. But they are around the same time the 95 eclipses came out with those terrible crankwalkers.

James

 

[microgalant]

Is the evo 2 the same also?
If the evo 3 or a 2g 4g63 crankwalk, can i get a stroker kit, put in it, will it prevent the crankwalk?

 

[Black95awd]

An evo 3 is def. a 7 bolt. They do have a cyclone intake instead of an eci IM. As far as crankwalking, any motor can crankwalk, hell, my 6 bolt could crankwalk tomorrow. But they are around the same time the 95 eclipses came out with those terrible crankwalkers.

James

my 95 had 15X,XXX on it and no crank walk..... and I had a 16X,XXX 95 auto with no walk....I have seen more 98's walk than anything.

 

[Black95TSIawd]

An evo 3 is def. a 7 bolt. They do have a cyclone intake instead of an eci IM. As far as crankwalking, any motor can crankwalk, hell, my 6 bolt could crankwalk tomorrow. But they are around the same time the 95 eclipses came out with those terrible crankwalkers.

James

Wrong. If it has a cyclone intake, it probably came out of a galant and is a 6 bolt. The evoIII intake manifold is different than both our 1g and 2g. Its actually a great intake. Plus the evoIII has a large throttle body, much like the 1g. It is true however that any motor can crankwalk.

 

[VETTE_50_TH]

The evo III ran from 95-96. I highly doubt that mitsubishi would go back 5 years in the books to make a 6 bolt. That car is a 7 bolt. They had been making that engine for 4 years at the time. The evo III manifold might be good, but i dont know if its a real evo III or a made up one like what my turbo is. The evo III 16g is just a made up name for a revised big16g that was out for years. So, are you referring to a real manifold off the evo III or a made up one?

James

 

[VETTE_50_TH]

Taken from MACHV forums form 2002

Of the cases I have received:
(updated 10-10-2002)

50% were "1997 Turbo DSMs" *

17% were "1996 Turbo DSMs" *

9% were "1995 Turbo DSMs" *

12% were "1998 Turbo DSMs" *

11% were "1999 Turbo DSMs" *

1% were "1994 or older 1g Turbo DSMs" (most of these had over 100,000 miles and were moderately to heavily modded **.)

1% were "Other" Non Eclipse/Talon/Laser vehicles with 4G63 turbo motors. (IE Galant VR4s, or Transplant cars, most of these had over 100,000 miles and were moderately to heavily modded **. )

To narrow this down even further:

85% were Manual Transmissions.

15% were Automatic Transmissions.

a couple other interesting notes:

The Milage on crankwalking cars ranged from 1,200 to well over 100,000 (the average landing right around 50,000 miles)

About 60% of the entire number of cars was Moderately to Heavily modded ** with the remaining 40% being Stock to Mildly modded **

98% of the people that I talked to that fixed their cars using NEW 2g parts (weather it was a new crank and bearings OR a new short block) had their NEW motors crankwalk again!! Most before 24,000 more miles.

2% have not had problems again (yet)...

.5% of the people that I taked to that fixed their cars with a 1g/Jspec motor swap had cankwalk return.

So, 97's were the most prone with manual transmissions.

James

 

[VETTE_50_TH]

Here is the lancer evo I. Look familiar??

You must be logged in to view this image or video.

James

 

[VETTE_50_TH]

Hey, Hey, Hey, dont you talk to me like that!

James

 

[microgalant]

If the evo 3 or a 2g 4g63 crankwalk, can i get a stroker kit, put in it, will it prevent the crankwalk?

 

[maximumbob]

Nothing can prevent crankwalk. If there was a solution everyone wouldn't be swapping in 6bolts. There are many theories and many "solutions" available from engine makers. The definitive answer is to swap to a 6bolt. For the record 135,xxx on my 96 without crankwalk.

 

[SanTa_]

EVO III block - is stronger, different casting
EVO III - runs larger camshafts
EVO III - Better intake manifold
EVO III - Yes small port, better flowing head design
EVO III - EVO III Manifold and Big 16G turbocharger
EVO III - 510cc Injectors
EVO III - Better coilpacks
EVO III - Factory Oil Cooler (not sure on the domestic product, but unlikely)

 

[DSM_6SL2 Power]

Dont be afraid of crankwalk. Whoever told you just because you got a jdm 7bolt it will crankwalk is a moron. I think it's something like less the 8 percent of all 2g's have crankwalked.

 

[Black95TSIawd]

Hey, Hey, Hey, dont you talk to me like that!

James

Are you referring to me? The cyclone intake manifold NEVER came on the evo. To my knowledge, a 6-bolt never was available to the EVO chassis hence me bringing up the jdm galant vr4. It was the only to use the cyclone intake. So YOU are the one posting mis-information. The evoIII16g did in fact come off of the evo III. If the original poster has a JDM 7-bolt than all he has to do is look at the intake manifold and throttle body. The evo tbody does not have an elbow. Rather, you secure a coupler onto it. There is NO cyclone intake for it. Just the JDM evo III intake manifold but the tbody is easier to see if you aren't too sure of what you are looking at.

Just some knowledge to everyone. Just like a lot of people are posting, crankwalk can happen to any car. Supra's are prone so are miatas. A 4g63 7-bolt engine, if built right, should last a while. You don't see supra owners running around looking for 1jz or even 7mgte motors to swap to?

 

[SanTa_]

I agree with Black. Just some cars have better chances are them being less prone of getting them, but they still have the chance too. SOme can get them right away and other won't until they have all these miles.

And no cyclone came on the evoIII, like i stated before the runners are smaller and they're similar to the newew evo manifolds (viii)

 

[VETTE_50_TH]

Are you referring to me? The cyclone intake manifold NEVER came on the evo. To my knowledge, a 6-bolt never was available to the EVO chassis hence me bringing up the jdm galant vr4. It was the only to use the cyclone intake. So YOU are the one posting mis-information. The evoIII16g did in fact come off of the evo III. If the original poster has a JDM 7-bolt than all he has to do is look at the intake manifold and throttle body. The evo tbody does not have an elbow. Rather, you secure a coupler onto it. There is NO cyclone intake for it. Just the JDM evo III intake manifold but the tbody is easier to see if you aren't too sure of what you are looking at.

Just some knowledge to everyone. Just like a lot of people are posting, crankwalk can happen to any car. Supra's are prone so are miatas. A 4g63 7-bolt engine, if built right, should last a while. You don't see supra owners running around looking for 1jz or even 7mgte motors to swap to?

BLACK, you are wrong. The evo III turbo did not come off a evolution III, that is a made up turbo. SAnta was correct saying that it is a big 16g. The evo III turbo wasn't around til after the millennium. Yes, i said that it has a cyclone manifold which is wrong. And lastly, no i wasn't saying "dont talk to me like that" to you.

James

 

[turboblack2door]

BLACK, you are wrong. The evo III turbo did not come off a evolution III, that is a made up turbo. SAnta was correct saying that it is a big 16g. The evo III turbo wasn't around til after the millennium. Yes, i said that it has a cyclone manifold which is wrong. And lastly, no i wasn't saying "dont talk to me like that" to you.

James

that being said what did the evoIII 16g actually come off of?

 

[joat09]

Taken from MACHV forums form 2002



So, 97's were the most prone with manual transmissions.

James

What is the percentage of dizzums that suffered from crankwalk, also were using ACT pressure plates?

 

[JEFFREYCASTGSX]

There were roughly 1,100,000 2g DSM's produced(counting turbo and non/turbo) of those there are less than 2000 reported cases, so even if you count the ones that are not accounted for, then less than 1% have ever got crankwalk.

 

[4g64fiero]

There were roughly 1,100,000 2g DSM's produced(counting turbo and non/turbo) of those there are less than 2000 reported cases, so even if you count the ones that are not accounted for, then less than 1% have ever got crankwalk.

Thank you!

However, I see a stipulation in your logic.

Not all 1.1 million were 4g63 eclipses.

 

[tjbiker031]

Crankwalk happened in domestic engines because of a defect from the factory. 95% of all cases happened 10 YEARS AGO! And when people say they got it now, its because they scream crankwalk when they have a problem with their bottom end. From what i understand the JDM engines didn't have the CW issue (or at least no more than any other motor does over there). To me its nothing to worry about because its pointless and if it does happen to me then I'll worry about it then.

 

[red_devil]

What other cars would a "jdm" motor come out of other than a evo?

 

[Strm Trpr]

Just for the record.
I had a 97 GST that I acquired at 63k miles and ran it hard up to 110k miles before she was prematurely taken from me when someone ran me off the freeway at 80mph.
Back when she had only 65k miles on her, I did a BSE, T-Belt and water pump and while I was at it, I measured crankshaft endplay with a dial indicator on a magnetic base and it was .0071".... right at the factory spec.
Service limit is .0098".
I was concerned but said Fcuk it, if it goes I'll swap it to a 6-bolt, no big deal.
Measured it again around 100k, and it was still .0071".
I had a heavy pressure plate and a 4 puck unsprung clutch disk too.

I acquired my 97 GSX at 50,500 miles in March of 2006.
I measured her crankshaft endplay when I did the BSE and T-belt at 52k miles.
Measured .0055" with the same dial indicator and magnetic base.
This motor had a ACT 2600 in it from 30k miles until 83k miles.
Then I put a Competition Clutch 2700 lb pressure plate and a sprung 6 puck clutch, and haven't had any issues.

I haven't checked the endplay since, and now I have 106k miles on her... running hella strong and fixing to go to Thunderhill for some road racing action on the 7th of November.....

There's two 97's for you.
The GST came from the East Coast, and the GSX is a California car.

 

[JEFFREYCASTGSX]

Thank you!

However, I see a stipulation in your logic.

Not all 1.1 million were 4g63 eclipses.

I know but even if only 100,000(i dont know exact) were produced, the percentage is still low.