JDM 92 GT-Four RC Colorado Emissions, Catalytic Converter

From Tune Ups to Oil Changes, maintenance related

Moderator: toayoztan

Re: JDM 92 GT-Four RC Colorado Emissions, Catalytic Converte

Postby 92RC » Tue Jan 11, 2022 5:20 am

alltracman78 wrote:How much larger was the silicone hose than the intercooler output?


It wasn't super loose if memory serves me correctly, pretty snug before I put the clamp on but it seemed like it wasn't going to form a good seal without the clamp. When I got the car it didn't have a clamp over the stock coupler (and it was already cracked) but looking online it looks like most other engine bays of RC models (both stock looking and somewhat modified) appear to have one, here's the most stock I can find https://youtu.be/sPCHwlQS5V0?t=75

FYI the ST165 TB coupler works for the RC also. If they're still in production. Also you can get an MR2 TB adapter (very similar to the aluminum piece you have) in the states. I think ATS racing makes them? Or did?


Good call on that, it's the same part on both the ST165 and the ST185 RC but it's discontinued by Toyota. I didn't bother to look up the ST205 part but it's not the same part number at least. I'd be interested to document any alternative OE quality couplers if anyone ever needs one but I'm not seeing anything other than what I bought https://www.nengun.com/oem/toyota/17861-88381

The ATS Racing MR2 Throttle Body Coupler is all metal, probably the same back plate but it's too long for the RC, even if I could chop that extra length off I doubt that would ever work.
http://www.atsracing.net/Parts/Details/E-ATS-TBI

Same with the GT4-Play for the non RC ST185
https://gt4-play.co.uk/shop/throttle-body-intake-pipe

What brand is that strut tower brace? Pretty cool it has the mounting points for stuff on it. I've never seen that before.


The car came with a Marché sticker on the side (Edit: And invoices from 2016ish them that I've roughly translated) and I guess that's the JSpeed company http://cs-marche.com (you can see a lot of their current parts say JSpeed on them) but I'm not seeing anything online for purchasing that part new.

That bracket is glued to that bar (with epoxy maybe?) but looking at RC engine bays I think the stock brace has a bracket built in? It looks like the charge cooler overflow tank is mounted in the same spot on most of the RC models including the YouTube link above, again I have a part of the boost controller mounted to that spot as well.

Next time I would suggest a 5SFE (5th gen) O2 sensor. The pin in the wiring should be the correct size. And once again a US part that's cheaper and easier to find. That looks more like something from 80s Toyota wiring. That way you won't have to mess with the pin like that. Also, I hope you saved the original O2 connector. That way you can reuse it again.


Wow I'm dumb, well the plus side is I saved $20 making that monstrosity and now I know I can get the exact fit if I ever encounter problems.

https://shop.advanceautoparts.com/p/den ... gen+Sensor

If you have to cut something, cut the sensor. You never want to cut the harness if you can help it because it's irreplaceable (or close enough to). The sensor is much cheaper/easier to replace. I know you didn't cut the harness, just saying FYI. :)


I may be an idiot but I'm not stupid :P I have to figure out how to repair one of the wires in the charge cooler level sensor harness so in that instance I might cut it and replace it with a generic plug but I'm not sure, if I can find that plug used on other similar Toyota models I could scour salvage yards for one.
Members don't see the above ad. Register now - it's free!
Last edited by 92RC on Thu Jan 20, 2022 5:13 am, edited 1 time in total.
92RC
Club Member
 
Posts: 39
Joined: Thu Jun 03, 2021 3:57 pm

Re: JDM 92 GT-Four RC Colorado Emissions, Catalytic Converte

Postby alltracman78 » Wed Jan 12, 2022 6:14 pm

92RC wrote:It wasn't super loose if memory serves me correctly, pretty snug before I put the clamp on but it seemed like it wasn't going to form a good seal without the clamp. When I got the car it didn't have a clamp over the stock coupler (and it was already cracked) but looking online it looks like most other engine bays of RC models (both stock looking and somewhat modified) appear to have one, here's the most stock I can find https://youtu.be/sPCHwlQS5V0?t=75
Yeah, RC came with a clamp too.
Any hose should be a snug fit to start, without any clamp. If not it's too loose IMO. The clamp just ensures it stays on and holds under pressure.



92RC wrote:Good call on that, it's the same part on both the ST165 and the ST185 RC but it's discontinued by Toyota. I didn't bother to look up the ST205 part but it's not the same part number at least.
ST205 is too large. On both ends. Larger TB (60mm vs 50mm? ) and larger IC outlet.


92RC wrote:The ATS Racing MR2 Throttle Body Coupler is all metal, probably the same back plate but it's too long for the RC, even if I could chop that extra length off I doubt that would ever work.
It works if you cut it down. That's what I did. Many years ago. :P Nothing wrong with what you have, just didn't know if it was easier to get the ATS parts.

92RC wrote:The car came with a Marché sticker on the side and I guess that's the JSpeed company http://cs-marche.com/ (you can see a lot of their current parts say JSpeed on them) but I'm not seeing anything online for purchasing that part new.

That bracket is glued to that bar (with epoxy maybe?) but looking at RC engine bays I think the stock brace has a bracket built in? It looks like the charge cooler overflow tank is mounted in the same spot on most of the RC models including the YouTube link above, again I have a part of the boost controller mounted to that spot as well.
Interesting.
All 185s have the same strut brace I believe. The bracket for the homologation overflow tank is used for the cruise control in the rest of the cars. Maybe why the RC didn't come with cruise? So that bracket probably was made that way, to accommodate the cruise control, and just happened to work out for the homologation ones as well. :shrug:

92RC wrote:Wow I'm dumb, well the plus side is I saved $20 making that monstrosity and now I know I can get the exact fit if I ever encounter problems.

I may be an idiot but I'm not stupid :P I have to figure out how to repair one of the wires in the charge cooler level sensor harness so in that instance I might cut it and replace it with a generic plug but I'm not sure, if I can find that plug used on other similar Toyota models I could scour salvage yards for one.


Not knowing doesn't make you dumb. Or an idiot. :)

Toyota has a part number listing of all their connectors. In older cars it's in a separate manual. In newer cars it's in each wiring manual.
Even if you can't find the correct connector you should be able to find another 2 plug connector that uses the same size pins (most of their sensors from that period use the same size male and female pins as the O2) and order a male and female connector so it looks factory.
You can even find a lot of the connectors aftermarket.

https://www.bmotorsports.com/

They have a lot of connectors, pins, and wiring stuff. They even have the tool to help you remove the pins from the connectors.

https://www.bmotorsports.com/shop/produ ... cts_id/366

This one


*Toyota wiring manual. Has all the connector and wiring pin part numbers.
The downside to the Toyota stuff is it's usually more expensive and you can't order just the wiring pins, they always come with a length of wire attached. I personally prefer just the pins, so I can crimp it directly to the wire.

https://www.toyota-tech.eu/wire_harness_rm/RM06H0E.pdf

*
alltracman78
GTFour God
 
Posts: 4810
Images: 0
Joined: Mon Aug 09, 2004 9:04 am
Location: Anywhere But There

Re: JDM 92 GT-Four RC Colorado Emissions, Catalytic Converte

Postby 92RC » Thu Jan 13, 2022 3:42 am

Wow, this is a lot of great information, thanks! I'll have to check out the BMotorSports link because a lot of the plugs on that project alone have seen better days so it might be an idea to replace a handful of them while I'm at it.

When I had set my sights on the RC I thought to myself "Nah I don't need cruise control, it's a sports car!" Fast forward to halfway through Utah on my first drive back from the Port I was like "yeah...cruise control would be pretty nice right about now." I did a longer drive 4 months later and that ended up being fine (probably because I wore more comfortable shoes) but it was a funny lesson in luxuries I often take for granted. That being said I'm not a huge fan of Toyota cruise control systems overall but sometimes something is better than nothing.
92RC
Club Member
 
Posts: 39
Joined: Thu Jun 03, 2021 3:57 pm

Previous

Return to General Maintenance and Repair

Who is online

Users browsing this forum: No registered users and 2 guests