6 Or 7 Bolt, Wide or Narrow

**Slagathor** · 11-18-2014 11:34 AM

I have a June 92 Mighty Max with the 2.4.

What are some ways I can difinitively tell if I have a 6 or 7 bolt wideblock or narrow block without taking the engine apart? I would use this chart:

http://projectzerog.com/mitsubishi_engines.shtml

But the problem is that my truck was built during the time period that they switched from the 6 to the 7.

**sleeps** · 11-18-2014 11:43 AM

Measure the block. I am 80% sure all the rwd mitsu's were wideblock. As for the crank, youll have to look at your flywheel.

**thehive** · 11-18-2014 11:57 AM

if it's a 2.4 it is a wideblock. if you look at the firewall and if says G64B it's a 6 bolt. if it says 4G64 it's a 7 bolt. and yes the trucks did get the narrow blocks but only in the 2.0 motors.

**Slagathor** · 11-18-2014 12:00 PM

I went and checked, and it turns out I have a 7. Thanks for the help!

**DroppedMitsu** · 11-18-2014 12:01 PM

Yup your truck is a wide block, all 2.4 truck motors are. As for the 6 vs 7 iM not sure, I know with dsm 2.0s(eclipses,etc) you can tell by looking at the oil pan/block but not sure with the 4g64

**thehive** · 11-18-2014 12:11 PM

yes it is the same, if the firewall says 4G64 it will have the curved front oil pan and thinner rods. i've had to do a TON of 2.4 research hear lately because i too thought that i was getting a 6 bolt and it turned out to be a 7 bolt

**thehive** · 11-18-2014 12:16 PM

actually with yours being a June truck you really need to do the oil pan check

and if it is a 6 bolt, BOOST IT!!!

**Slagathor** · 11-18-2014 12:55 PM

LOL.

Looking at the oil pan I can for sure say that it is flat. I took it off last week to put a new gasket on it and it is definitely flat.

I AM SO CONFUSED. GAH!

Love my truck though. She will always be my baby.

**Slagathor** · 11-18-2014 01:18 PM

I took some pics. Do these help at all?
20141118_145948.jpg 20141118_150021.jpg

**thehive** · 11-18-2014 01:23 PM

man if it's flat then yes you have one of the older rarer 6 bolt 4G64's perfect for boost and a strong motor for sure

**Slagathor** · 11-18-2014 01:27 PM

Awe hell yeah.

I hate to be that guy, but if anyone in this thread wouldn't mind taking a look at another thread I posted, I am having some issues with the battery.

http://www.mightyram50.net/vbulletin...sues-Questions

**noahwins** · 11-18-2014 02:12 PM

I was under the impression all '90, '91 and some '92s were wideblock 6 bolt 2.4 liter.

There are a few rarer wideblock 6 bolt 2.0s that can with automatic transmissions.

**RWD4G63** · 11-19-2014 09:37 AM

Another easy trick to quickly tell if you have a 6 or 7 bolt is to look at the Head Bolts. Open the oil cap and look in the valve cover with a flashlight. If the head bolts are Allen Key head bolts, it's a 6 Bolt block. If they are 12 point 14mm (stretch bolts) it's a 7 bolt.

**thehive** · 11-19-2014 10:53 AM

WOW!! he's totally right! i have a 2.0 6 bolt motor and and 7 bolt 2.4 right next to each other and yeah i had never noticed that!! awesome info for junk yard shopping!

**RWD4G63** · 11-19-2014 01:13 PM

I'm glad my over abundance of information that is totally useless to 99.8% of the world, was finally appreciated by somebody.

**BradMph** · 11-19-2014 04:54 PM

LOL RWD4G63, all information you give here is never worthless to us.

mitsubishi_engines.jpg

**claych** · 11-21-2014 07:12 PM

Excellent trick RWD4G63!!!

I just went and checked My d/d, 4g64 build date 12/92, = '93.

yuppers, 12 point !, thx added!!

**Slagathor** · 11-22-2014 11:16 AM

I am glad this thread has opened up so much. I really appreciate all the help on this one. However, even with all the help, I still have no idea as to what engine I have.

What I do know:
1. The oil pan is flat
2. The firewall says 4G64
3. Here is a pic from the inside of my valve cover. They look like regular bolts, but I can't tell.
Inside the Valve Cover.jpg

I guess I'm gonna have to bite the bullet and check the flywheel so I will know once and for all. Can anyone send me to some instructions on how to get to the flywheel?