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Specializing in the 3g CSM
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PostPosted: Fri Mar 29, 2019 9:15 pm 
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The Silent Administrator
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Oddly enough, no stress cracking across any surface where contact occurs between the clutch friction surface and the pressure plate and flywheel. I assume that if heat was deep enough, stress cracks would be showing and the parts would be structurally compromised if deep enough. A light scuff with low grit sandpaper and the friction surfaces look great.

The only way to drive this setup, was to slip/clutch in balance as you exit the garage and enter the garage, and parking lot maneuvers were painful and required some slipping and lots of clutch application to disengage the power flow.
I do have a FIAV and high OEM cold idle range that is totally operational, but this is nothing out of the ordinary and it stock so this should not be an issue.
It does however spending more time with the clutch held down, simply because of the low speed handling during really maneuvers.

Let see if more mass on the flywheel and lower direct pressure on the tob/fork/hydraulics can help make this little tin can a bit more drive-able.


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PostPosted: Sun Mar 31, 2019 12:00 pm 
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Emailed Advanced Clutch Technologies about the strap/spring fingers issue.


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PostPosted: Thu Apr 04, 2019 7:42 pm 
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No response to my email thus far.


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PostPosted: Sat Apr 13, 2019 10:40 am 
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ACT has been in contact. They asked for some visuals and I provided a multitude of pictures along the lines of what is posted, and more of what was not.
Hoping to hear back soon.

In the meantime, there are multiple parts orders en route to my home.
One parcel arrived today, and another also from Japan having just shipped from that island.
STMTuned *had some stock on early style or 1990 4g63t USDM TEL or 1989 4g61t USDM Mirage/Colt TB FIAV gaskets. They are no longer in production, so wherever a warehouse has some, that’s all you are going to find.
I was curious about Cyclone dual runner style sectional gaskets, and those sadly were out of production a few years back and it showed all over the net as such. Mitsu has them as NLA in all the electronic catalog listings. Good to know the part numbers still show up though.

I will provide some pictures of the first parcels contents as it arrived from Japan. Japan always does an over the top job of packaging all items they send out. I will likely have to offload pictures from my phone to get them to upload properly.

Ninja Edit *I suspect I got the last of their stock.


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PostPosted: Sat Apr 13, 2019 4:36 pm 
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Some call me a god
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Location: Stuarts Draft,VA
Quote:
ACT has been in contact. They asked for some visuals and I provided a multitude of pictures along the lines of what is posted, and more of what was not.
Hoping to hear back soon.

In the meantime, there are multiple parts orders en route to my home.
One parcel arrived today, and another also from Japan having just shipped from that island.
STMTuned has some stock on early style or 1990 4g63t USDM TEL or 1989 4g61t USDM Mirage/Colt TB FIAV gaskets. They are no longer in production, so wherever a warehouse has some, that’s all you are going to find.
I was curious about Cyclone dual runner style sectional gaskets, and those sadly were out of production a few years back and it showed all over the net as such. Mitsu has them as NLA in all the electronic catalog listings. Good to know the part numbers still show up though.

I will provide some pictures of the first parcels contents as it arrived from Japan. Japan always does an over the top job of packaging all items they send out. I will likely have to offload pictures from my phone to get them to upload properly.
It would be nice if someone would scan the flanges and had some phenolic gaskets made for the cyclone dual runner manifolds. I have one loose at my garage that hasn't been split and also have one on the way on a original JDM GVR4 swap that will be going into the Colt I got from AZ. Guess there isn't enough demand to warrant them. :(

_________________
Joey Santiago

2003 Lancer Evolution 57k original miles
1989 Plymouth Colt GT (AWD project)


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PostPosted: Sun Apr 14, 2019 7:36 am 
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Essentially, using gasket sheets to create a copy from a tracing, is about all the gasket setups we are likely to get. Would be great to have someone scan the ports though; that would be really cool!

I would love to see a person walk into a copy store with sections of the intake and ask to put them down on the copier surface, so they could copy them.


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PostPosted: Sun Apr 14, 2019 11:12 am 
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If someone had a set of OEM gaskets - a copy would not get the little rubber silicone rings for seals but ... - they could be scanned into a file to be used for cutting new sheets to spec.

On a side note but build related, I went looking for throttle body parts as I knew that I had done some rebuilding not that long ago, but things can now be nearly a decade old because my clutch install was 2010, and major engine work wasn't until 2013? on the refresh, with some more updating around 2015 with the Cyclone parts installation and activation via ECMLinkV3.
I had ordered enough parts to rebuild three TB's of the early style; 1989 4g61t and 1990 4g63t throttle bodies were unique in that they had a single casting which incorporated the FIAV and ISC chambers with the main core of the throttle body - that includes chambers for coolant flow - but coolant cannot mix in the TB by design unlike the 1991 TB castings that had a split body and the coolant could get past the O-ring for the FIAV and be ingested by the motor!

Both style of TB, the 1989 4g61t and the 1990 4g63t use two different size oil seals to keep the throttle shaft sealed to the housing during motor operation - IE no boost leaks or vacuum leaks off boost.

1990 Throttle Body uses the Chicago Rawhide CR 3930 seal on the spring-side and the smaller CR 3030 seal on the TPS side.

Full specs:
3030 CR 8x12x3 HM4 R
3930 CR 10x14x3 HM4 R

These are oil seals by design, if you are using any other cross reference due to product shortage with Chicago Rawhide.

Dimensions are in millimeters.

1989 4g61t and 1990 4g63t use TWO sizes of oil seal, one of each. (3930 CR 10x14x3 HM4 R) and (3030 CR 8x12x3 HM4 R)
1991+ USDM style uses two (total count) identical (3930 CR 10x14x3 HM4 R) oil seals.

I rebuilt my 89 Colt 4g61t TB with those CR parts, and since then a 1990 DSM TB using those seals yet again.

Went into my stash of little random baggies on the shelves, and found I have still have one 3930 and three 3030 seals in reserve. I won't have to order any to do a refurb for the sake of refurb. Do I trust a seal that has less than 6k km's of use on it? Maybe ... but for 10-15$ worth of parts I already have here, I will install them and call it good, as I don't want to be going in for TB removal if boost/vacuum does leak for any reason. New parts or bust!

Also found a BISS O-ring NIB OEM and a BISS cap plug - now the plug is probably a duplicate but it's good to have around.


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PostPosted: Sun Apr 14, 2019 4:19 pm 
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Some call me a god
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Joined: Sat Jul 07, 2007 10:40 pm
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Location: Stuarts Draft,VA
Quote:
Essentially, using gasket sheets to create a copy from a tracing, is about all the gasket setups we are likely to get. Would be great to have someone scan the ports though; that would be really cool!

I would love to see a person walk into a copy store with sections of the intake and ask to put them down on the copier surface, so they could copy them.
ahhhh you maybe onto something here! I am gonna try and split my loose manifold later tonight and see if I can get it off in one piece, if I think that it isn't going to work I'll trace it out on heavy duty construction paper. Then tomorrow I'll scan it at work to the exact size and see if I can email the scan to someone that can print out gaskets on a 3d printer.

_________________
Joey Santiago

2003 Lancer Evolution 57k original miles
1989 Plymouth Colt GT (AWD project)


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PostPosted: Sun Apr 14, 2019 4:41 pm 
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Some call me a god
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Joined: Sat Jul 07, 2007 10:40 pm
Posts: 1015
Location: Stuarts Draft,VA
Quote:
If someone had a set of OEM gaskets - a copy would not get the little rubber silicone rings for seals but ... - they could be scanned into a file to be used for cutting new sheets to spec.

On a side note but build related, I went looking for throttle body parts as I knew that I had done some rebuilding not that long ago, but things can now be nearly a decade old because my clutch install was 2010, and major engine work wasn't until 2013? on the refresh, with some more updating around 2015 with the Cyclone parts installation and activation via ECMLinkV3.
I had ordered enough parts to rebuild three TB's of the early style; 1989 4g61t and 1990 4g63t throttle bodies were unique in that they had a single casting which incorporated the FIAV and ISC chambers with the main core of the throttle body - that includes chambers for coolant flow - but coolant cannot mix in the TB by design unlike the 1991 TB castings that had a split body and the coolant could get past the O-ring for the FIAV and be ingested by the motor!

Both style of TB, the 1989 4g61t and the 1990 4g63t use two different size oil seals to keep the throttle shaft sealed to the housing during motor operation - IE no boost leaks or vacuum leaks off boost.

1990 Throttle Body uses the Chicago Rawhide CR 3930 seal on the spring-side and the smaller CR 3030 seal on the TPS side.

Full specs:
3030 CR 8x12x3 HM4 R
3930 CR 10x14x3 HM4 R

These are oil seals by design, if you are using any other cross reference due to product shortage with Chicago Rawhide.

Dimensions are in millimeters.

1989 4g61t and 1990 4g63t use TWO sizes of oil seal, one of each. (3930 CR 10x14x3 HM4 R) and (3030 CR 8x12x3 HM4 R)
1991+ USDM style uses two (total count) identical (3930 CR 10x14x3 HM4 R) oil seals.

I rebuilt my 89 Colt 4g61t TB with those CR parts, and since then a 1990 DSM TB using those seals yet again.

Went into my stash of little random baggies on the shelves, and found I have still have one 3930 and three 3030 seals in reserve. I won't have to order any to do a refurb for the sake of refurb. Do I trust a seal that has less than 6k km's of use on it? Maybe ... but for 10-15$ worth of parts I already have here, I will install them and call it good, as I don't want to be going in for TB removal if boost/vacuum does leak for any reason. New parts or bust!

Also found a BISS O-ring NIB OEM and a BISS cap plug - now the plug is probably a duplicate but it's good to have around.
Nice info.

I found this on a quick search. https://tech.mirage-performance.com/tef ... asket.html

Seems a bit tedious but that material which a lot of performance aftermarket suppliers use seals very well and I have never had a problem reusing one (on the same manifold and head) after my Magnus intake manifold cracked a few times. :rolleyes:

_________________
Joey Santiago

2003 Lancer Evolution 57k original miles
1989 Plymouth Colt GT (AWD project)


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