1G 3G brake booster and master

[Maes]

Does anyone know if a 3g brake booster and brake master is a direct bolt on for a 1g? I've searched and found nothing. Thank you

 

[Dsmkauai]

Yup sure is, so is 2g

 

[Maes]

Thanks Kauai for the quick reply.

 

[Dsmkauai]

No problem bro! Only diff on the 3G is the fluid reservoir is attached to the master. But you can switch that easily.
http://www.dsmtuners.com/threads/1-1-16-3g-eclipse-master-cyclinder-install-on-1g.359819/

 

[Maes]

Can I just use my 1g lines and to mount it to the master?

 

[ThunderChild]

idk if you found this out, but yes you can, or at least i used the 1g reservoir and lines on my 3g MC/booster install. the grommets/seals arent the tightest, but mine sealed just fine, has been for the past year, but its just sat since install and bleeding.

was probably one of the easier swaps i did on the car, aside from the brake line bending and re-flaring.

 

[mitsubishikid]

Sometimes using the stock 1g reservoir is a must... at least it was in my case, because I'm running a front gab strut brace, and with the 3g style reservoir installed on my booster, it interfered with the strut bar, so if you intend to add a strut brace in the future, or if you already have one installed, look out for that.

 

[Maes]

Thanks for all the input guys.

 

[lasthope05]

Fittings are different, so they have to be changed from inverted flare to bubble, i think. Id have to go take another look to confirm.

 

[Maes]

Fittings are different, so they have to be changed from inverted flare to bubble, i think. Id have to go take another look to confirm.

If you could that would be much appreciated.

 

[awd4g63turbo]

The fittings are different as lasthope05 stated. Some people have had them seal up just fine, others haven't. I pulled my lines off and took them to a local brake shop to them reflared. Only took @ 10 minutes and they didn't even charge.

 

[EGLTAWLN]

I just finished a 3g 8"+9"Brake booster and 1 1/16" Master cylinder upgrade on my Colt AWD. I used Aeroquip fittings in the MC and Earls fittings in the Proportioning valve.
The Aeroquip fitting FCM2941 matched the profile of the bubble flare fitting i removed from the 1 1/16" MC. Fit perfect, no leaks.
The Earls fitting 592032ERL matched the profile of the inverted flare fitting i removed from the Colt proportioning valve. Fit perfect,no leaks.
Both the Aeroquip and Earls fittings had a visibly different profile.

 

[Maes]

I just finished a 3g 8"+9"Brake booster and 1 1/16" Master cylinder upgrade on my Colt AWD. I used Aeroquip fittings in the MC and Earls fittings in the Proportioning valve.
The Aeroquip fitting FCM2941 matched the profile of the bubble flare fitting i removed from the 1 1/16" MC. Fit perfect, no leaks.
The Earls fitting 592032ERL matched the proportioning valve fitting profile. Fit perfect, no leaks.
Both the Aeroquip and Earls fittings had a visibly slightly different profile.

Thank you good info right there.

 

[GST with PSI]

It's a direct bolt-on in the sense that it will physically bolt in place, however, the 3G master has bubble flare fittings. As EGLTAWLN said, you need adapters to match the stock inverted flare brake lines to the 3G master's bubble flare ports. Alternatively, you can have a brake shop try and reflare your lines as
awd4g63turbo said. This has been discussed in depth in many threads:

http://www.dsmtuners.com/threads/3g-brake-master-in-a-2g.459407/page-3#post-153454564

http://www.dsmtuners.com/threads/brake-too-soft-after-installing-evo9-brakes.485836/#post-153468069

 

[ceedawg]

Gst with psi is right. And excellent threads

I had some lines made up by a hose shop because of the mismatch issues with the flares.That took care of everything car has excellent brake performance and no leaks.

By the way DO NOT USE ANY ADAPTERS get the lines made up with the correct fittings on each end if you can take the stock 1g flare and bring the master cylinder with you to the hose shop measure the distances so that you know how long you want the brake lines to be then have them check the parts so that they give you exactly what you need. That's what I did.

 

[92AWDHX40]

Good I got some work to do before I order my line's.

 

[GST with PSI]

By the way DO NOT USE ANY ADAPTERS get the lines made up with the correct fittings on each end if you can take the stock 1g flare and bring the master cylinder with you to the hose shop measure the distances so that you know how long you want the brake lines to be then have them check the parts so that they give you exactly what you need.

I think you're meaning don't use adapters in conjunction with stock hard lines. I'd agree.

You'll most likely have to use adapters if you're using braided stainless AN lines.

 

[ceedawg]

I think you're meaning don't use adapters in conjunction with stock hard lines. I'd agree.

You'll most likely have to use adapters if you're using braided stainless AN lines.

The AN lines I would guess so, however I am using braided brake lines from MC to the antilock brake module but as you know from the past threads where I posted I had the hose shop give me flared ends that matched both the stock Dsm flares and the 3G flares on opposite ends. This prevented me from using any adapters period by just replacing the entire line as I just wanted to keep it simple. It also was not expensive at all and without having to deal with extra parts(adapters).

Some folks may want to go the AN route of course which would require adapters as you have mentioned.

I hope to take pics of my setup for you guys on Monday.

 

[EGLTAWLN]

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..This is what I did. $100. Check out my Colt build for more pictures of the Brake booster and Master Cylinder upgrade.

 

[Maes]

I was planning on just making my own new hard lines. I've already had to replace both the rears so I do have the tools required.

 

[Geeb]

Bringing this back from the dead, being right around Halloween and all.. (Hmmm, ok. Your right, not funny)

But.. Does anyone have the 3G MC/BOOSTER part number?

I think even certain Sebrings use the same MC? Not 100% sure though..

Basically I'm just not sure if the eclipse gt/base have different ones.. And what else might have it. Thanks guys

 

[ist dwa]

HOW TO DO IT in a 1g

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[SasaniFab]

I upgraded to 3000gtvr4 brakes and went back to twin piston 1g brakes. Using a 3g master on stock brakes is a downgrade imo, The pedal feel is very stiff and more effort has to be applied for the same performance. This has to do with the size of the master cylinder yes?

 

[ist dwa]

That is completely incorrect a larger master cylinder means more fluid travels with less pedal travel. The reason you do this is because you are upgrading brakes which has more pistons which requires more fluid. for me the reality is is why do I want to buy a 1G master cylinder when I can buy a 3G it's really not beneficial but more of a parts availability in my opinion. I mean come on the 3G brakes are pathetic but even the engineers decided the master cylinders was too small which it is.