Mosebrosdsm submitted a new DSM Profile :

14b power


Read more about this vehicle here...

Ignition timing was off 10 degree or so adjusted that. Car runs great now beside one thing. At cruising speeds randomly I’ll feel the car lose a little power and my afr’s spike lean. I mean way lean like 18+. I’ll push in the clutch and drop rpms to idle and I’ll put into back in gear and it goes away. It eventually comes back and does the same thing within minutes. I’ve been dealing with this problem since before the 6 bolt swap. It’s just progressively gotten worse now. Anybody have this problem. No check engine lights regarding this problem either.

Also got rid of the clicking noise that I thought was coming from the ecu/mfi relay. It was an emissions control solenoid acting up. Nothin wrong with ecu or mfi relay. As for the Lean condition I’ve checked fpr selonoid its withIn spec. Also check coil pack which tested in spec along with the ptu module in spec. Also checked the transistor which is also within spec. Replaced the fuel filter around 30k ago. No fuel in the fpr vac line so I think that’s working properly. Does anyone have any insight to this random lean problem. It’s hard to drive it on the highway cause of this. It also doesn’t idle at stoich until I drive it for 20 minutes otherwise it will idle around 12-13 afr. When cruising on the highway afr’s are at stoich.

So right as I got it running finally the dsm curse I have been under took over started again. Started to hear a very light knock around 3k. Before I spun a rod bearing I pulled the pan and found #3 rod bearing shot. Numbers 1,2,4 were also on there way out. Took part the motor found that my main bearing were also on the way out. I avoided a huge catastrophe it was a ticking time bomb. Previous owner of engine must have knew something was fishy with it. I only got around 300 miles out of the motor after swap. I have the engine disambled waiting for rebuild parts. I got the crank in for a polish hopefully it still is within spec to rebuild. Gonna do some measurements when I get it back. The pistons have some skirt wear and so do the cylinder walls. Not sure if need new pistons or not I don’t think it’s severe enough to where it will effect anything. Oil pump is trashed for sure. Yay for engine rebuild.

Based on the pictures I don’t think where was to much damage. I don’t think I’ll need much machine work to be done. Hopefully just the crank polish and oil galley ball removal, hone, and deck.

If anybody has any input I would much appreciate it.

I would get it bored and decked along with the head, just my .02¢ but I’m in Minot!

brandonc452 said:

I would get it bored and decked along with the head, just my .02¢ but I’m in Minot!

Click to expand...

Forgot to mention the head and block will get get decked. This is sorta of a budget build as I’m not in North Dakota right now. Currently in Utah going to school. I have a 7 bolt 2.4 litre that I will be dumping a lot more money into. If I can get by with just a cylinder hone and re using these pistons that’s probally what I’m gonna do. It won’t be seeing more than 350 hp.

I’ve seen a couple dsm’s cruising in Minot before was wondering if there were any members in this desolate state nice to know now!!

So I recently have been able to spend some time getting the necessary machine work done so i can order the correct parts. I have ran into a little hiccup though. I just got my crank back from the machine shop. I am currently living Logan Utah. The machine shop i get my stuff done at is called Horse Power Farms located in Benson Utah. Great people and great work too. I had a micro-polish and ball removal done to the crank. Obviously as soon as I got it back I mic'ed it check if it was still in spec here are my measurements. All measurements were done with my Fowler micrometers. I took a horizontal and vertical measurement on both side of all the journals. So four total measurements per journal. I measured with the key of the crank vertically on top. Im going to start with the flywheel side and end on the oil cover side for mains and rods journals.

Need some help/suggestions if i should still use this crank. The specs are at the very lowest amount according to the service limits

1. Front correlates with oil cover side
2. Rear correlates with flywheel side

Mains: ordered from flywheel to oil cover

Horizontal 1.) 2.2433 2.) 2.2434
Vertical 1.) 2.2433 2.) 2.2434

Horizontal 1.) 2.2434 2.) 2.2434
Vertical 1.) 2.2434 2.) 2.2434

Horizontal 1.) 2.2433 2.) 2.2433
Vertical 1.) 2.2434 2.) 2.2434

Horizontal 1.) 2.2433 2.) 2.2433
Vertical 1.) 2.2433 2.) 2.2434

Horizontal 1.) 2.2434 2.) 2.2434
Vertical 1.) 2.2433 2.) 2.2433

Rods: from flywheel to oil cover

Horizontal 1.) 1.7706 2.) 1.7707
Vertical 1.) 1.7707 2.) 1.7706

Horizontal 1.) 1.7707 2.) 1.7707
Vertical 1.) 1.7706 2.) 1.7706

Horizontal 1.) 1.7707 2.) 1.7706
Vertical 1.) 1.7706 2.) 1.7706

Horizontal 1.) 1.7707 2.) 1.7706
Vertical 1.) 1.7706 2.) 1.7706

The service limit for the rod journals is 1.7710- 1.7717
I am under on all of them what should I do??

So I took some measurements of the rod journals today just to triple check my work. They varied from 1.7703 to 1.7706. I also torqued my rods up to spec with the some standard size ACL aluglide bearings. I used some telescoping t bore gauges which are hit and miss if you ask me when it comes to measuring bore sizes but its all i got. Those measurements varied from 1.7725 to 1.7731. All in all i did the math and my oil clearance for my rods were all beneath .003. Ranging from .0021 to .0027. My micrometers are spot on its just the bore gauges that are hard to work with. So far im pretty pleased i guess. Stock 1g rods were torqued down to 37 ft lbs. There was no information regarding if i should use a lubricant on the bolts to get proper torque specs so i just did it as they were. I saw a couple threads that said you should and a couple saying you should not. So I did not.

Any thoughts or suggestions to help me out are always welcome.

So the DSM gods have looked down on me and blessed me! I got the 6 bolt running! ARP’s completely thru the whole block. 2g piston and balanced 1g rods. I had Horsepower Farms here in Benson Utah do all the necessary engine work. Once I got her in and broke in she hauls now!!

On a side note about 100 miles into the break in I left back to Logan utah for school. I live in devils lake North Dakota! That’s a 16 hour trip with no stops! The dsm made it to Logan utah 2 days later with no cruise and I was also hauling a trailer! Yes I got a stock trailer hitch on my 95 and pulled a trailer for 20+ hours thru several mountain passes and gusty winds up to 35 mph. SHE MADE IT. I have complete and utmost belief in the 4g63 platform and I will continue to rip thru the gears like she just got off the showroom floor!! She was not happy about the trailer nor were my miles per gallon. If I were to estimate the weight of the trailer and everything on it. I would say close to 800 pounds!!

Call me crazy call me stupid I really don’t care because my DSM is running strong and better than ever before even after 2 days of constant stress on the engine! Right now I am proud to own a dsm!!

Glad you got it back up and running. I'm in Utah too, though about 2 hours south of you. I'm new to the DSM game (not automotive stuff) but if you need a hand let me know.