My poopy conquest and it's cracked block

[FattyBoomBatty]

Took the head off today and found this stuff:



Maybe the turbo's too big. I blame it on the turbo.




Milky coolant-oil mix on that stud that came out of the hole between 3 and 4. The block has little visible cracks from the stud hole to each coolant hole around it - the crack trifecta. The headgasket also failed, but I think it was because of the crack or whatever caused the crack.

I am happy to know what it is, and I'm thinking it wasn't completely my fault, the block could have been weak there and perhaps even with a good tune it would have done this.

The pistons look pretty good, no visible damage, I bet the block is just fubar'd. So now the big question: buy someone's good shortblock or buy and build a wideblock 2.4 with dsm head and all that garbage? either way would be SO simple, but damn it if it doesn't cost an arm and a let.

[Kracka]

Bummer man!

[FattyBoomBatty]

at least it's not the head! Too bad I spend a grand on machining though.

[1QUICK4]

That sucks dude.

As far as what motor route to go with. Do you want to keep it more original? I'd go with the DOHC 4G6 swap but I am not conserned about originality.

If you wanted to keep it more collectable I'd stick with the truck motor.

[MustGoFaster]

[Super Bleeder!!]

Originally Posted by FattyBoomBatty

at least it's not the head! Too bad I spend a grand on machining though.

How did you spend a G on machining?

[FattyBoomBatty]

well, it was balanced, the crank had to be welded and ground 10 under, polished, I had them put the pistons on the rods, etc. I just gave it all to them and they gave it back to me ready to assemble. And it was napa. maybe that was the problem from the beginning! haha.

But here's what I am going to do now. I am going to find a block, have it checked for cracks, if it checks out good, I'm going to have it bored .030 over and slap my innards into the fresh block and whip it back together.

Any suggestions if I do it that way?

[scheides]

Sucky man, and you just got it running

Bring it back to napa and see if they'll warranty it!

[Super Bleeder!!]

Maybe dont use a block thats been bored so much next time. Use a stock bore or maybe .010 over.

[FattyBoomBatty]

I thought .030 was pretty standard overbore.

[Super Bleeder!!]

Thats on the large side. .010 is more common. The more material you leave the less your block integrity is compromised.

[FattyBoomBatty]

Yeah, I get that. Well, I have the 30 over pistons, so I may as well give 'em another shot at the big time.

I want to make as much power with stock rods and hyperU's as the people with forged pauter rods and wiseco pistons. Maybe I'll never get to, but I think tuning is the way.

[Speedfreak]

If it dies again, go the 4g6 truck block route.

[C3L1CA]

That sucks dude!

Sounds like you got a plan to get it back on the road again, hopefully the new block holds up to the punishment.

[Kevin 1G Drummer]

That sucks alot!

[turbotalon1g]

Sorry to hear, I was looking forward to seeing it up and running again.
my vote is 4G wideblock and T56

[FattyBoomBatty]

If another g54b fails, I will think about the 2.4, though a 2.0 might be just as cool. the best, of course would be the 2.4 with BC 2.6 stroker kit. hells yeah, stock displacement with DOHC, every conquest guys wet dream.

[Shotgun!]

Originally Posted by FattyBoomBatty

If another g54b fails, I will think about the 2.4, though a 2.0 might be just as cool. the best, of course would be the 2.4 with BC 2.6 stroker kit. hells yeah, stock displacement with DOHC, every conquest guys wet dream.

The tall block (4g64 or G4CS) with the eagle 94mm crank and EVO 9 head with MIVEC. That's a wet dream.

[FattyBoomBatty]

I should get a 6G72 but the 3.5 liter version, and another 61.

[MustGoFaster]

Originally Posted by FattyBoomBatty

I should get a 6G72 but the 3.5 liter version, and another 61.

It's called a 6g74. I bet you could bolt in a 6g75 (3.8L) MIVEC motor just as "easy". Add another 61 to that!