What SS Brake Lines for 2G with 2 pistons calipers?

[VenomPL]

I bought mitsubishi 2 pistons calipers for my 2g gst. Not sure if they come from 1G gsx, Diamante or 3000GT SL. But they use 'screw in' type of lines. Can I just use 1G brake lines or do I need some kind of adapter?

 

[Cs4g63]

http://www.roadraceengineering.com/eclbrakes.htm
At the bottom of the page there are adapter lines they sell that will take care of your problem.

Just next time make sure that for a 2g you get the ones that come off of a 2g awd. That way you dont have to mess with adapting the lines.

 

[snowborder714]

You can always call up RRE (Road Race Engineering) and ask them since they sell lines for both styles of calipers. From what I remember, the 93+ GSX calipers have bango fittings.

This link has pictures of calipers from a 3000GT (has screw-in style lines).
DSM Dual Piston Caliper Upgrade (All 2Gs Except GSX/TSi AWD) - DSM Forums

Same write up - just more pictures on the main site (not linking off).
Dual Piston Caliper Info and Review - DSM Forums

And I've attached a pic of my calipers which came off of a 93+ GSX. Hopefully you can match your calipers up with one of these pics to help you find the right lines. Again, if you don't want to do that, you can always call up RRE and they can probably help you determine which lines you need (and they sell normal sets for GSX pistons and adapted sets for 3000GT and Dimante pistons).

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Good luck!

 

[Rice Over Wheat]

I'm going with the StopTech kit from extremepsi.com

http://www.extremepsi.com/store/customer/home.php?cat=1370

 

[snowborder714]

Those are nice but are pretty expensive.

 

[VenomPL]

I thought they are all the same calipers (1G GSX, 2G GSX, 3000GT, Diamante) and only diffrence between them are the brake lines fittings?

I can not see any diffrence between all of those pictures posted above...

This is how mine looks like:

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I am wondering if I can just buy 1G lines (screw in) and just put it on my 2G? Or do I really need those RRE adapters?

 

[snowborder714]

They are all the same calipers but I had posted the pics so you could match up the way the line goes into the caliper.

Yes, you need the screw in type and you should be able to just bolt them on to your car (no need for new lines). No, you don't need the RRE adapter lines.

 

[Cs4g63]

Im not trying to be an a$$. Im just curious so I can learn something new. How is it going to work just using the 1g hoses when there is an upper and lower hose, and the 2g uses a just one long hose? What will need to be done to get the hoses to work correctly?

 

[VenomPL]

snowborder714 you are confusing me a lot! but thanks for trying to help me anyways

OK let me rephrase my question:

I have a 2gst with stock 1 piston caliper and upgraded ss lines with bonjo bolts
I bought dual piston calipers (1G gsx/3000GT) with a 'screw in' brake line fittings

Now in order to put those brakes on my car I definitely need some diffrent lines - I CANNOT use my bojno bolts. They have to be screw in. THE QUESTION is if brake lines from 1G will fit on a 2G car? Why I am asking that? Because 1G lines come in 2 pieces for each side so there is 8 lines (well 4 lines but each line is 2 lines connected together) for the whole car. 2G cars uses only 1 line per caliper so there is 4 lines all togheter on a 2G car.

The adapter from RRE is $105... thats a lot. 1G front ss lines are like $50 on eBay - for me its a big diffrence and please someone with a knowlege let me know if I can get away with 1G lines or do I need that adapter

God this is difficult

 

[VenomPL]

Im not trying to be an a$$. Im just curious so I can learn something new. How is it going to work just using the 1g hoses when there is an upper and lower hose, and the 2g uses a just one long hose? What will need to be done to get the hoses to work correctly?

This is exactly what I need to know

 

[Cs4g63]

Okay. I looked at the hoses off of the 1g and the one off of the 2g. You can use the ones off of the 1g on the 2g, but you will either need to get the metal lines off of the 1g that go between two hoses or you will need to make one to connect the two hoses together. It will work once you get that part done.

 

[snowborder714]

Sorry about that VenomPL. I must've been looking at it wrong myself and had things screwed up. From talking to RRE, I thought I didn't need the adapter lines by what the guy was telling me.

So, since I'm in the same boat (2G GST with screw in style 2 piston calipers), I would need to get the RRE adapter lines? And from what's stated previously, the 2G 1 piston calipers have the bango style lines, correct?

 

[DSMunknown]

I have a question that goes along with this discussion:



I was wondering if those calipers (either the 2G 2-piston calipers or the 1G 2-piston calipers) would fit on the 10.2" OEM rotors that come with the 2G FWDs. Now, let's assume they will fit without any issues. Should there be any clearance problems regarding the wheels (the OEM 16" 5-spoke rims)?

 

[Cs4g63]

They would fit in the since that they would still bolt up but the pads would stick out over the edge of the rotor, which of course is not good. There isnt much of a price diference in the two diferent rotors anyways, so i would just get the rotors for the 2 piston setup at the same time as getting the calipers and pads. I ran my stock rims when i did this and had no clearance issues at all. 16's will work just fine.

 

[DSMunknown]

They would fit in the since that they would still bolt up but the pads would stick out over the edge of the rotor, which of course is not good. There isnt much of a price diference in the two diferent rotors anyways, so i would just get the rotors for the 2 piston setup at the same time as getting the calipers and pads. I ran my stock rims when i did this and had no clearance issues at all. 16's will work just fine.

And why is that necessarily bad? Understandably the pads would not evenly wear (there would be a severe part of the pad that would hang over the edge of the rotor, and therefore not wear at all), but what other effects could come from not installing larger rotors (like the 11" OEM rotors seen on the 1G/2G AWDs).

 

[oldman]

For clarification, only 92.5'+ 1G AWD comes with dual piston calipers.

And why is that necessarily bad? Understandably the pads would not evenly wear (there would be a severe part of the pad that would hang over the edge of the rotor, and therefore not wear at all), but what other effects could come from not installing larger rotors (like the 11" OEM rotors seen on the 1G/2G AWDs).

Anthony, for one thing you will end up with less stopping power than a single piston setup due to less contacting surface, kinda defeats the purpose of upgrading to the dual pistons in the first place, I wouldn't recommend doing it.

 

[DSMunknown]

For clarification, only 92.5'+ 1G AWD comes with dual piston calipers.


Anthony, for one thing you will end up with less stopping power than a single piston setup due to less contacting surface, kinda defeats the purpose of upgrading to the dual pistons in the first place, I wouldn't recommend doing it.

Thank you Bruce for both clarifications. I now understand the performance effect (or lack there of) of not upgrading the rotors to an adequate/appropriate size. But I am still wondering if there is some other mechanical malfunction that could/would occur if such a modification was done.

Again, I'm not saying that I still am considering the 2-pot upgrade while leaving on 10.2" rotors. But I'm asking what harmful/detrimental results can come from such a setup. That is to say, could the rotors become damaged in any sort of way by doing something like using smaller rotors in conjunction with a larger pad contact area and with equal (or unequal, depending on how you look at it) force pushing onto the pad?

 

[daren_p]

Thank you Bruce for both clarifications. I now understand the performance effect (or lack there of) of not upgrading the rotors to an adequate size. But I am still wondering if there is some other mechanical malfunction that could/would occur if such a modification was done.

Again, I'm not saying that I still am considering the 2-pot upgrade while leaving on 10.2" rotors. But I'm asking what harmful/detrimental results can come from such a setup. That is to say, could the rotors become damaged in any sort of way by doing something like this?

Like oldman said not a good idea. The 2 piston caliper won't fit the 2g fwd rotor properly as its designed to work with the larger diameter 2 piston rotor. The edge of the rotor will be part way on the pad surface. Don't swap calipers unless you have the proper sized rotor to match.

To the OP, you need a set of 2g lines with the 1g style screw in fitting. RRE has these, its a complete new SS line (set of 4), not just an adapter which is why their $105. You answered your own question, no you can't use the 1g lines as they are 2 piece. You can make up some of the difference by selling of your stock style 2g SS lines.

 

[DSMunknown]

Like oldman said not a good idea. The 2 piston caliper won't fit the 2g fwd rotor properly as its designed to work with the larger diameter 2 piston rotor. The edge of the rotor will be part way on the pad surface. Don't swap calipers unless you have the proper sized rotor to match.

But of course.



My question is, what will become of this? I see that in this instance part of the pad will be in contact with the appropriate area of the rotor, part of the pad will be on the edge of the rotor, and part of the pad will not be in contact with anything but the pistons it is being pushed by.

Again, I understand that this should not be done, and that doing so negates the purpose of upgrading the brake system. I will not use the smaller rotors with these 2-pot calipers. But I am asking what the effect (other than the decrease in stopping distance) that could/will come of such a situation.

Perhaps there is increased friction at the edge in this example (where the manufacturer did not design the system to account for overly-large surface pads), and thus arises a possibility of a fire?

 

[oldman]

Again, I'm not saying that I still am considering the 2-pot upgrade while leaving on 10.2" rotors. But I'm asking what harmful/detrimental results can come from such a setup. That is to say, could the rotors become damaged in any sort of way by doing something like using smaller rotors in conjunction with a larger pad contact area and with equal (or unequal, depending on how you look at it) force pushing onto the pad?

Honestly, I can't think of any mechanical issues besides uneven force being put on the pads but I'm no expert in brakes/suspension so don't quote me on it, hopefully one of our resident experts like wret or jtmcinder will chip in on this.

 

[jtmcinder]

I have nothing to add other than to say I would never do it on one of my cars. Sorry.

- Jtoby