ok guys winter time build. which block should i use?

[jeremy19984g63]

OK guys big horse power build this winter. so that means heavy clutch. I have already had thrust bearing failure, from lanching at high rpm's. using act 2600! I have three blocks that i could use, but one is 95 year block. so we're not even thinking of build it.. that leaves us with a 98 year block with thrust washers, and a evo II block with early style oil jets (and yes it is a true evo II. not an early style 7 bolt)

I am asking for others thought on which block should have less chance of thrust failure with big pressure plates? so any input on either that you have experienced would be great!

And please do not say just put in a six bolt. just wanting yo use what i got

 

[92AWDHX40]

just do a rebuild use good bearings and arps, and properly done you should be fine. pick one

 

[gieri002]

Definitely go with the 98 block if it has the split thrust bearing design. That way you can basically kiss crankwalk goodbye!

 

[DSM IN MN]

I must ask because I am curious; What would be wrong with possibly using an Evo. III block?

 

[jeremy19984g63]

Definitely go with the 98 block if it has the split thrust bearing design. That way you can basically kiss crankwalk goodbye!

that what i was thinking, but i really do like the evo oil squirter design! im just fighting myself between the two

 

[Alex7747]

I must ask because I am curious; What would be wrong with possibly using an Evo. III block?

op has an evo II(2) block.
op, just build it(which ever one you want) right with a NEW OIL PUMP and you'll be crank walk free.

 

[DSM IN MN]

op has an evo II(2) block.

I can read. I was asking for my own benefit. Considering I have an Evo. III(3) block.

 

[jeremy19984g63]

evo I-III are the same block design

 

[tkelly27]

Multiple disk clutches can give very high clamping force with a lower normal force on the pressure plate. Twin disks are readily available from vendors. I've also heard of people getting Tilton triple disk clutches after NASCAR teams are done with them. Rebuild kits are cheap, but adapting it to the DSM may not be super simple. You'll probably get tired of a huge nasty single disk pressure plate anyway.

The newer style thrust setup is supposed to fix the crank walk issue. A friend and I had also discussed modyfing that area in the block to force oil directly into the thrust area. Make sure you tell your machinist that this is something you are concerned with.

 

[Alex7747]

I can read. I was asking for my own benefit. Considering I have an Evo. III(3) block.

ohhh my mistake. in that case, there would be nothing wrong with using an evo 1-3 block sense they are basically the same blocks as ours.

 

[DSM IN MN]

ohhh my mistake. in that case, there would be nothing wrong with using an evo 1-3 block sense they are basically the same blocks as ours.

I bought it because of the oil squirters, but then found out you should take the squirters out because they can starve your main bearing of oil. Then I read this thread about the thrust washer stuff and remembered that. I am looking for 6xxHP minimum so, I am just consirned.

 

[jeremy19984g63]

if you have a true evo block the oil squirters are not located on the main journals, and will not starve the mains. unlike other 7 bolts

 

[Alex7747]

I bought it because of the oil squirters, but then found out you should take the squirters out because they can starve your main bearing of oil. Then I read this thread about the thrust washer stuff and remembered that. I am looking for 6xxHP minimum so, I am just consirned.

that is why you delete the balance shafts haha

 

[e85_4g63]

If your so worried about crank walk, why the F are you building a 7 bolt? Do you like being stressed out or something?

 

[Alex7747]

If your so worried about crank walk, why the F are you building a 7 bolt? Do you like being stressed out or something?

yes because no 6 bolts ever crank walked .

 

[e85_4g63]

yes because no 6 bolts ever crank walked .

There are definitely 6 bolts that have developed crankshaft play. But I read threw the thread, and the OP is worried about crank walk (hence not using the 95 block) and yet, refuses to use the (LESS LIKELY) to crank walk 6 bolt motor. To me, this makes no sense. Surely he can sell his 7 bolt block(s), and buy a 6 bolt with little to no loss of money. Why worry about if the motor is going fail if there is a better alternative? This, of course, is all my opinion, and well all know the saying "opinions are like a$$holes, everyone's got one, and no one cares". Seems logical though that if the 7 bolts are known to walk, and 6 bolts are known to not walk, then refusing to use a 6 bolt is asking for problems, does it not? About the 6 bolt crank walking, for every 1 6 bolt you can show me that crank walked, I can show you at least 10 7 bolts that have. I'm not saying that ALL 7 bolts have thrust bearing failures, as someone pointed out the 98+ split thrust bearing blocks don't seem to be as prone to this as the 95 to 97's, but if you build a 7 bolt motor, crank walk is A LOT MORE LIKELY to happen, then if you built a 6 bolt motor. So my question to the OP is, why are you against using a 6 bolt bottom end?

 

[Yamahaulin]

Pick up a g4cs block it's a 2.4l 6bolt

 

[jeremy19984g63]

because im not going to chase done a 6 bolt when i've got two great blocks! Im not that worried about thrust failure. If the build makes 500hp (my goal) and i can get a couple years out of it. That will tickle me to death. i was just wanting to see if others have had better luck out of one or the other! you know, build the better of the two.

Im not building the 95 because ive had experience with them, and they're trash! and would build a 6 bolt over a 95-97 if that was my only option!

 

[deviousgst]

Im not building the 95 because ive had experience with them, and they're trash! and would build a 6 bolt over a 95-97 if that was my only option!

my 97 block is built..never had a problem with it..
going 50k strong

 

[bryanwheat]

If you use a 2g block either block off the oil jets or install new ones. They have been proven to fail when old.

 

[DSM IN MN]

If your so worried about crank walk, why the F are you building a 7 bolt? Do you like being stressed out or something?

2.4L, 100mm 7-bolt crank from a Galant = OEM stroker crank. That is why I am not building a 6-bolt.

 

[e85_4g63]

(OP) I understand. In that case, I'd use the 98+ split thrust washer block. I don't know much about the EOV I - III blocks, so I can't comment on them.