| Blown Engine Part 2 - Click HERE for Original Thread |
| djshortys |
where do you live? the BOONIES???
andy! |
|
|
| GsiTurbo |
| lol...no...this is just where I work on the car. |
|
|
| SplineZ |
Whats this "Follower"? got a pic of it?
James Z |
|
|
| TurboTony |
What do the valves look like?
Did you check the timing belt for correct alignment before you took it off?
Kinda looks like the belt may have jumped and a valve contacted a piston.
Tony |
|
|
| GsiTurbo |
quote:
Originally posted by TurboTony@Jun 24 2003, 09:16 PM
What do the valves look like?
Did you check the timing belt for correct alignment before you took it off?
Kinda looks like the belt may have jumped and a valve contacted a piston.
Tony
Timing belt was checked before the removal - was all correct.
And SplineZ, for you viewing pleasures :bigthumbup:
Its item #22
cheers |
|
|
| SplineZ |
looks almost like a rocker arm :)
James Z |
|
|
| ChromeDragon |
Might I ask where the follower snapped? Was it right in the centre on the bridge or towards the ends where it attaches to the valves? I've never seen inside a DSM engine so I'm not to familiar with how these units look.
Chromey |
|
|
| ChromeDragon |
To me it looks like there is a piece of the follower still attached to the valve that's hidden under the cam, so was this valve still functioning when the engine was running? Obviously it wouldn't function to full lift with nothing hoding up the other side of the follower, but it makes it fairly obvious what the clinking was if it was making contact and jingling when the valve seated.
Chromey
P.S. Engine failures are more interesting to me than engine success, it's cool to see what tears them apart. |
|
|
| GsiTurbo |
quote:
To me it looks like there is a piece of the follower still attached to the valve that's hidden under the cam
If you are referring to the pic at the very top, what is sitting underneath the cam, is the part that once used to be on the top of the lifter. The follower snapped around where it goes onto the valve itself, towards part 17 on the diagram.
quote:
so was this valve still functioning when the engine was running?
Valve was dead....actually upon closer examination, even the bronze valve guide was pushed downwards by about 5-7mm. It was not functioning at all....as part of the follower was just sitting there, not really pushing an anything other than the bottom of the head. |
|
|
| REFLUX |
excellent tech post :bigthumbup::bigthumbup:
Hope things work out man, I can't give any insight cuz I'm a queer who plays with triangles.
How much do DSM heads go for anyways? |
|
|
| SplineZ |
its a SOHC Opel engine.. I see mitsu nowhere :)
whats the displacement of this engine?
James Z |
|
|
| mitsuman |
| Hehe... You beat me to it! This is not a mitsu motor people! |
|
|
| mitsuman |
I wonder if:
1) The lifter lost its oil some how, then extra clearance created enough space for the rocker to fall out at some rpm. Then the rocker got hit around and made contact with lifter (side loading) thus cracking your lifter housing. I'm not sure about this motor, but on the 4G63 mitsu motor, it take a lot of effort to take the rocker off with the cams installed and no oil in the lifters. Hard for me to imagine, but not impossible, that a rocker would fall out just because the lifter got depressurized.
or
2) The lifter lost its oil some how, then extra clearance created enough space for the rocker hit the top of lifter with some kind of side loading. This loading would then aid to crack the lifter housing and things get worse from there.
or
3) The lifter housing cracked first (unlikely thing), then the lifter lost its oil and was able to move out of position. Then the rocker arm fell out and got bashed around.
M |
|
|
| Pro Drag |
quote:
Originally posted by ChromeDragon@Jun 25 2003, 03:29 AM
I've never seen inside a DSM engine so I'm not to familiar with how these units look.
*shake's head in frustration*
This is NOT A MITSU MOTOR! :wtf:
To the best of my knowledge this is a 2.2L GM motor.
This is how rumor's about the reliability of DSM's start. :angry:
P.S. Chromey, I ain't mad at ya. :bigthumbup: |
|
|
| BLK_LBL |
This is a 2.0L OHC Factory turbocharged GM engine.
GSITurbo, one of my friends has a Old grand am with a 2.0T in it.... It would probably make a good parts car for you. I was going to grab that car and Throw in the 2.0T in place of my 2.0n/a, but I got lazy B)
btw sweet car, I could swear I've seen it b4 in sherwood park, or edmonton. |
|
|
| ChromeDragon |
quote:
Originally posted by Pro Drag@Jun 25 2003, 04:23 PM
quote:
Originally posted by ChromeDragon@Jun 25 2003, 03:29 AM
I've never seen inside a DSM engine so I'm not to familiar with how these units look.
*shake's head in frustration*
This is NOT A MITSU MOTOR! :wtf:
To the best of my knowledge this is a 2.2L GM motor.
This is how rumor's about the reliability of DSM's start. :angry:
P.S. Chromey, I ain't mad at ya. :bigthumbup:
LoL, well my excuse was right there. I'm not a DSM head so I can't be expected to identify one at a glance.
Chromey |
|
|
| GsiTurbo |
The engine is GM 1998cc SOHC Turbo. Intially the block (called as the 'big block' as opposed to the 'small block' of 1.6L) was used with the conjunction of a 16V head in the Opel Kadett E GSI and Vauxhall Astra Mk2 GTE variants in europe. With 156 bhp stock, and standing 1/4 mile in 15.5s this car was a true GTI eater back in late 80s. The block was then adopted into the US market (with minor changes due to different injection system used), but was only available with 8V head :( Again...this side of the pond got the worse of the rest of the world.
As an update, the problem was found to be one of the following:
- mechanical failure to the lifter, or
- valve float
To prevent further problems like that, new lifters are on order, together with stronger springs, new camshaft and followers. ETR on the head is late next week. Repair should proceed next weekend.
cheers! |
|
|
|
|
|
