1G Cam angle sensor seal, part number??

[tsi1991awd]

Well I've noticed before and have taken a look lately, there was a tiny bit of oil coming from the cam angle sensor. Does anyone have a part number for the seal? This is on the passengers side of the head, at the back of the valve cover.

 

[tunethis]

MD619648.

I had a leak there with my old Eclipse. The old one was hard and brittle and felt like plastic.

 

[rich3389]

EXTREME PSI : Your #1 Source for In Stock Performance Parts - OEM Cam Angle Sensor O-Ring : Mitsubishi Eclipse 90-99

 

[tsi1991awd]

Thanks. Is that easy to replace? I don't want to have to redo my timing from just changing the o ring.

I'm replacing the VC gasket when I do my lifters anyways so I can do it all at the same time.

 

[TALONTRAX]

It`s just an o-ring. Remove it from the base & take it to a local Napa or a parts supplier & match it up . . .

 

[tunethis]

Thanks. Is that easy to replace? I don't want to have to redo my timing from just changing the o ring.

I'm replacing the VC gasket when I do my lifters anyways so I can do it all at the same time.

It's easy and quick. There's just 2 bolts on the cas. It only takes a couple minutes to do. I traced the mounts on the head with a marker, took it off and replaced it in the same spot I removed it from.

 

[tsi1991awd]

Thanks. Ill have a good days worth of work to do when I get my lifters in. Gotta helicoil two of the VC bolt holes too since they're stripped.

 

[97ebaygst]

I know this is an old thread but does anyone have the dimensions for that o ring?

 

[Tanro]

Is this the same o-ring for the late 2g cas?

 

[2gmitsueclipse]

CAS o-ring is different between 1g and 2g:

• 90-94: Part # MD619648

• 97-99: Part # MD622021

They can be purchased from a number of supporting vendors such as Extreme PSI or JNZ Tuning.

 

[mitsubishikid]

I ran an o-ring from harbor fright 0-ring kit http://www.harborfreight.com/397-piece-metric-o-ring-assortment-67580.html I had it on there for about 3 years now, and so far no leaks.
I have heard of some dsm owners having leaks from using rounded after-market o-rings in place of the oem cas seal, but it's hit and miss and o-ring kit is not that much it's worth a try.

And the CAS o-ring size is P30 (w=3.5mm, ID=29.7mm)

 

[pauleyman]

I ran an o-ring from harbor fright 0-ring kit http://www.harborfreight.com/397-piece-metric-o-ring-assortment-67580.html I had it on there for about 3 years now, and so far no leaks.
I have heard of some dsm owners having leaks from using rounded after-market o-rings in place of the oem cas seal, but it's hit and miss and o-ring kit is not that much it's worth a try.

And the CAS o-ring size is P30 (w=3.5mm, ID=29.7mm)

The part numbers are above and I was just fooling with this. Just for anybody finding this thread the p30 o-ring mentioned is for 1g CAS. 2gb CAS doesn't use an o-ring to seal to the head and the actual sensor has a small o-ring. The mount to the head is just a housing and it's sealed OEM with just RTV. Yes that seal can get old and leak but it's just rtv.

 

[ishnish]

Hey, I'm bringing this back up, but are we positive here that the 2G CAS doesn't use an o-ring? I have very little oil residue after driving right under the CAS on the cylinder head surface. I'm wondering/thinking it is actually coming from the CAS. I looked back through my entire build (glad I took pictures of it all) and saw when I removed my CAS housing, attached to the intake cam and in fact had no o-ring on it. I also went back through all my invoices and didn't see any order of an o-ring but did of the triangular gasket that goes between the CAS plate and housing.