I need opinions

Darkwing · Post by **Darkwing** » Mon Jan 28, 2013 12:01 am

So Ive searched and searched but can not find no information.

My though is has any one run an 2.0 DOHC (1st gen)BLOCK with a mag head running a crane 12? my first thought is valve clearance.

will my combo work or should i go the JE Pistons 10.5:1 route?

oh and im going to be putting this into my non NGC 2000 Neon highline

Post by **occasional demons** » Mon Jan 28, 2013 8:00 am

It has been done plenty. You can either file a little off the pistons, or massage the head. If you are anal about the balance of the rotating assy, you will grind a wee bit off the head.

The pistons only really contact the head if you are buzzing it over 6500 to 7500+ rpm. (More towards 7500+)

Our 1gn ATX has a DOHC bottom end, neither pistons or head (SOHC) modified, and there hasn't been any contact. ATX PCM rev limits at 6000 rpm tho.

There are also valve reliefs, so you should have no issues with a 12. You could probably run a 400 without worry.

The piston to head is more likely than valve to head. Unless you mill the head a good amount.

Darkwing · Post by **Darkwing** » Mon Jan 28, 2013 8:35 am

great! im considering a small amount of milling the head. and i know i wont be hitting that 6500-7000K RPM.. i still have a ATX in this one. LOL

mopar2 · Post by **mopar2** » Mon Jan 28, 2013 11:02 am

My 01 ATX doesn't have a rev limit I've hit yet. It will shift at 6700 rpm all day long! The ngc's are different but my 3 spd wil just keep revving hehe.

Post by **occasional demons** » Mon Jan 28, 2013 2:52 pm

Hmmm, might want to be really careful not to down shift near those RPM's to get a little more umph.

My cousin managed to explode the TC in a brand new '87 Turbo Sundance. Thus why I figured they rev limited them to ~6000 rpm.

It's really interesting when everything comes to an abrupt stop, and a serene silence sets in.

Then he hits the starter, and it just buzzes....

The dealer was a little less than pleased.

mopar2 · Post by **mopar2** » Mon Jan 28, 2013 5:44 pm

Yea that would suck! When I first started at another dealer there was a SRT10 ram on the lift and the 6spd on the bench in multiple pieces not taken apart by the tech hehehe. Customer stated he went to downshift into 5th and must have reached 2nd at 80mph. Ooooops The clutch, flywheel, all exploded, shattered the 6spd, damaged the body, luckily the aluminum block was unhurt.

Post by **occasional demons** » Tue Jan 29, 2013 9:55 am

Clearly it was not as stout as a neon clutch. I basically did the same to my neon, before I found out there were such things as Booger bushings, and the shifter wasn't supposed to have a mile of slop.

Bounced the tach off of the zero peg. I figured it, and I were both done.

The facing blew off the clutch about 40,000 miles later. Don't know that it was related tho.

Darkwing · Post by **Darkwing** » Tue Jan 29, 2013 10:02 am

i saw on youtube a while back of a neon blowing up the transmission when he tried to do a burn out LOL! wow! .. so i dont think ill ever go that high of an RPM.

r/tguy02 · Post by **r/tguy02** » Tue Jan 29, 2013 10:16 am

occasional demons wrote:There are also valve reliefs, so you should have no issues with a 12. You could probably run a 400 without worry. The piston to head is more likely than valve to head. Unless you mill the head a good amount.

i've done both without issue, i've bounced the limiter a few times and still no contact. (thats with filed pistons)

darkwing as for the clutch blowing apart vid you speak of, thats a member on here and it was a bum clutch/trans already he just wanted to put it out of its missery. a clutch in good working order wouldnt do that during a burnout.

Darkwing · Post by **Darkwing** » Tue Jan 29, 2013 11:23 am

so where does the piston hit the head? corners .. i guess i should search now huh? LOL

Post by **occasional demons** » Tue Jan 29, 2013 12:26 pm

In the pic above, where the pistons are raised.

Darkwing · Post by **Darkwing** » Tue Jan 29, 2013 1:02 pm

oooohhh i see now.. id think you'd lose compression if you remove that.

r/tguy02 · Post by **r/tguy02** » Tue Jan 29, 2013 3:27 pm

Darkwing wrote:oooohhh i see now.. id think you'd lose compression if you remove that.

not with the little you take off the edge

Darkwing · Post by **Darkwing** » Tue Jan 29, 2013 6:44 pm

ok i see. ok now im having trouble finding a crane 12.. i found a comp 400 but im not too sure of if its a good choice for a daily atx.

Post by **Canada** » Tue Jan 29, 2013 6:48 pm

Where did you find a comp400?

Darkwing · Post by **Darkwing** » Tue Jan 29, 2013 6:56 pm

locally here in Albuquerque NM guy has it in his 1998 sohc with a blown trans. LOL

stdlystdmufn · Post by **stdlystdmufn** » Tue Jan 29, 2013 7:02 pm

i daily'd a comp 400 in an ATX and it was deff not too much.