7bolt 2.3 ??

[sleepinGSX]

WEll my 97 crankwalked, and im in the process of rebuildin a new motor, i wanted to go 6bolt 2.3 and 2.0 but a new 7bolt and 2.4 crank fell into my lap. I was thinking about have all the journals machined for thrust bearing, thinkin this would eliminate the crankwalk problem. Has anyone ever done this before??

 

[dsmturboawd]

Originally posted by sleepinGSX
I was thinking about have all the journals machined for thrust bearing, thinkin this would eliminate the crankwalk problem.

cliff notes: no.

 

[sleepinGSX]

Yea, but would it maybe "prolong" the engine life, cuz i can have the machine work done pretty cheap. Any other options would b help full also, i think im goin to end gettin another 6bolt though. The seven bolts left a bad taste in my mouth.


Josh

 

[sophat34]

if u have it already go for it, I did. there is little to no proof that a 7bolt 2.4 has any more chance of walking than a 6 bolt 2.4 not enough people have even built these moters let alone run them long enough to come up with stats on this. there is one case that a 2.4 7bolt failed. that failer was not determined to be CW, it most likley an error on the part of the shop who did the work on it. if you are going to do the 2.3, 2.2, or 2.1 by all means use 6 bolt parts. but a 2.4 doesnt use the crank or block of the 2.0 like those others do. if you do to the 2.4 look in to the long rods and piston set that marco has up at magnus. its worth it.

 

[sleepinGSX]

well i just wanted to do a 2.3, i think that will suit my needs, so using the 2.0 block it the only thing i hate, but if i do i will have all trust brearing put in, hopefully that will help.

 

[sophat34]

when your builing the this block u are going to have to get a set of stroker pistons at some point. I wonder what u are using for rods as well. but when u are bulding a motor its not cheap, for another 100-150 u can get a 4g64 block and be done with the 2.0l 7bolt stuff. the only things that u need to do with a 4g6g block, that you wouldnt have to do with the 4g63, is plug the holes in the block, difrent timing belt, and adj cam gears are highly recomended. just so u know that I am not just talking heres a link to mine all put together. http://www.dsmtuners.com/gallery/showphoto.php?photo=28904&password=&sort=7&thecat=500
arkasas mitsubishi is where I got my block and crank from for 150 shipped. they garrenty that the parts are machinable or they send u another one, they are very good about it too. good luck

 

[sleepinGSX]

Hey thanks for the imput, do u have a link to that mitsu palce, 150 pretty cheap, was that a 6bolt 4g64 ? Im pretty set in goin for the 2.3, i have heard nothing but good things about it. And yes i am goin fully built with this motor.

 

[sophat34]

if you are going to build a motor do it right the first time. it might cost a little more up front but its much cheaper then having to build another one later
this is the link http://asap.partslocator.com/ there prices have gone up a little but not all that much. that was for a 7 bolt 4g64 out of a 97 galant.
if your doing a full build u might want to think about the 2.2 in theory it should do better than both motors if its set up right. it has lower piston speeds and if done right can have much better rod angles than the 2.3/2.4 <both have the same rod angles.

 

[thedsmsource]

I am in the proccess of assembling my 2.4l engine. One thing that i notice with alot of engines being but together out there is lack of machine work being done to them. Unfortunately there is more then just decking the block, bore/honing the cylinder, and hot tanking the unit. The shop i had sent my motor to machines everything from porshes to ferrari to lotus etc, and has tons of equipment setup to do so. I think one main problem with alot of crank walk is rebuilds without line honeing the mains, and balancing the crank with rods, clutch, flywheel and harmonic balancer. Recently when i had work done i had all of the above completed on it, along with having the crank polish, oil journals enlarged, slighty cut down, etc. Although having all of this done brought me to a total of $2000 worth of work (along with my head work), but i am starting to assemble a race motor with everything true in every respect. I think that the only one i know of that sells short blocks is Marco at Magnus. They seem to care a little more about the crank and journals then do most. Just my humble opion though.

 

[sleepinGSX]

Whats a 2.2 ???