Interference Engines FTL!

gilly02le · Post by **gilly02le** » Mon Dec 24, 2007 12:54 am

Thought i'd post up the pics of the damage that occurs when your timing belt breaks.
Pictured Below are my now garbage $240 indy o/s valves. Every last one is now JUNK!

contagious18 · Post by **contagious18** » Mon Dec 24, 2007 1:13 am

Now dat sucks

-Devil- · Post by **-Devil-** » Mon Dec 24, 2007 9:16 am

yep i have seen that before ...

hmmm which reminds me .. my neon is at 79k miles ... i might as well go ahead and get the peices gathered up for a belt change .. (and camshaft)

Arro · Post by **Arro** » Mon Dec 24, 2007 11:20 am

This is why Dodge Daytona Turbo is king.

total non-interference engine. I broke a belt once. Just stopped running, and I rolled to the side of the road. Had the belt replaced the next day and drove the car for another year and a half before it was totalled.

MyNeonSaysHi · Post by **MyNeonSaysHi** » Mon Dec 24, 2007 11:42 am

Nice^^^

That sucks!!! Those valves are fubared to the max!

I was told SRT-4 engines are non-interference for the most part.

Arro · Post by **Arro** » Mon Dec 24, 2007 11:49 am

I would like to hear a comfirmation on that, because after seeing the combustion chambers I don't believe it. But definitely a confirmation would be great.

quicksilvr · Post by **quicksilvr** » Mon Dec 24, 2007 12:22 pm

That does indeed suck. How many miles were on your timing belt? Also...I'm curious to see if the water pump froze and that's what made the belt break. When you take it all apart, you'll want to replace the water pump even if it didn't fail, but I bet it failed (if I was a betting man).

gilly02le · Post by **gilly02le** » Mon Dec 24, 2007 1:03 pm

I'll have to let you know, bought this head as i was told i was in good shape, off a running car, clearly, this car was not running, so im trying to get this all sorted out... kinda sucks to have happen around christmas, but hey, at least it wasn't the timing belt on my DD.

INVUJerry · Post by **INVUJerry** » Mon Dec 24, 2007 1:28 pm

If someone told you that the car was running, I'd beat their ass. Timing belt on a neon means new valves, and maybe pistons.

03blackrt · Post by **03blackrt** » Mon Dec 24, 2007 1:34 pm

JDM valve tilt

esteinmaier · Post by **esteinmaier** » Mon Dec 24, 2007 1:45 pm

The "real" meaning of a 3-angle valve job.

OB · Post by OB » Mon Dec 24, 2007 2:25 pm

MyNeonSaysHi wrote:Nice^^^

That sucks!!! Those valves are fubared to the max!

I was told SRT-4 engines are non-interference for the most part.

Cbussilver01es · Post by **Cbussilver01es** » Mon Dec 24, 2007 4:10 pm

yep that same thing has happened to me as well. Interference motor FTL! .... damn timing belts...

MoxHair · Post by **MoxHair** » Mon Dec 24, 2007 6:39 pm

OB wrote:
MyNeonSaysHi wrote:Nice^^^

That sucks!!! Those valves are fubared to the max!

I was told SRT-4 engines are non-interference for the most part.

They are Non-Interference Motors.

MyNeonSaysHi · Post by **MyNeonSaysHi** » Mon Dec 24, 2007 6:45 pm

SRT-4 motors are non-interference due to low compression and piston design.

non-interference means that if the belt breaks the pistons won't hit the open valves. An older V-8 Hemi would be an interference motor

In the first gen neons, the dohc had .344 lift on the intake, and .314 on the exhaust. The engine made 170-175hp, but with bigger cams, but do to the timing belt life of 60K, they shorten the lift to achieve it. If your running bigger cams, it's not really the belt that you need to worry about, it's the tensioner. They were never designed for big ass lift cams. The srt4 cams are the smallest of the neon family, hense the 100K timing belt lift span, the belts haven't changed, it's the lift, take that under your wing when going big cams.

Arro · Post by **Arro** » Mon Dec 24, 2007 7:20 pm

Really? SRT-4 engines are non-interference?

WOW that fucken rocks!

gilly02le · Post by **gilly02le** » Mon Dec 24, 2007 8:26 pm

yea, i bought it on the f/s boards here so, unfortunatly said member, wasn't too honest, but im not going to start a battle, i'll just take it up with them. lol jdm valve tilt ftw!

p.s - merry christmas everyone!!

INVUJerry · Post by **INVUJerry** » Mon Dec 24, 2007 8:41 pm

Be sure to leave feedback about the transaction. Positive or not.

OverDrive418 · Post by **OverDrive418** » Tue Dec 25, 2007 9:59 am

HOLY S!...*runs to get new timing belt...*

gilly02le · Post by **gilly02le** » Tue Dec 25, 2007 12:36 pm

Gates racing timing belts? Any good? It'd be nice to have a lil extra peice of mind, since i've got upgraded springs, and i'll be running a comp400 or crane14

euroneon21 · Post by **euroneon21** » Tue Dec 25, 2007 8:39 pm

just changed my belt yesterday. it has a loose spot in it.

BlackRoseRacing · Post by **BlackRoseRacing** » Wed Dec 26, 2007 7:09 am

2.0 = Interference
2.4 = Non-Interference
This past month we have had 3 2.0's in the shop with blown belts, but they were all related to water pump failure's. With that said, chances are your valves might look like the above post after this happens. So when your in there doing the repairs DO NOT get a cheap ass water pump to save money, spend the money and get a good water pump thats not a reman, get a new pump!

titansxt · Post by **titansxt** » Wed Dec 26, 2007 12:34 pm

daaboots · Post by **daaboots** » Thu Dec 27, 2007 7:52 am

Ouch

I'll be changing my belt this summer for sure now!

Kelevra · Post by **Kelevra** » Thu Dec 27, 2007 7:56 pm

titansxt wrote:

Conflicting info much?

^^ says the 2.0 SOHC is not an interference and the 2.4L DOHC is

Post by **racer12306** » Thu Dec 27, 2007 8:08 pm

That chart kind of contradicts what we have seen.

BlackRoseRacing · Post by **BlackRoseRacing** » Sat Dec 29, 2007 6:33 pm

That chart is not accurate at all!

Kelevra · Post by **Kelevra** » Sat Dec 29, 2007 9:07 pm

Chrysler FTL!

they f*cked up again! XD

kc2005ptgt · Post by **kc2005ptgt** » Sun Dec 30, 2007 1:16 pm

so what IS the proper milage to replace the timing belt? 80k, 90k, 100k, 105k, 60k? I know I need to do mine... hell, I half want it to blow so I can get a new engine... like a swapped srt4... but whatever.

gilly02le · Post by **gilly02le** » Mon Dec 31, 2007 6:27 pm

60,000miles AFAIK.