G37 / FX50 Akebono Brake Retrofit

I was afraid of getting that answer. :-/ i want improved braking and I feel like if I buy cross drilled and slotted and ss lines and pads for the calipers i have now I'll feel like a chump for not doing this akebono upgrade.
 
So I'm putting together all the parts I need to do this. I already have the calipers, but I need clarification on the banjo bolt. I know it is shorter and it comes with the stoptech SS lines though there are two options for SS lines. First option is for stoptech calipers and second option is for OEM calipers. The difference is in the banjo bolt and there are two options, 18.75mm and 20mm lengths. Which one?? Also how would one modify the stock banjo? I looked in this thread and no luck...

[TABLE="class: productListing, width: 100%"]
[TR]
[TD="class: productListing-heading, bgcolor: #000000"]Part Number[/TD]
[TD="class: productListing-heading, bgcolor: #000000"]Manufacturer[/TD]
[TD="class: productListing-heading, bgcolor: #000000, align: center"][/TD]
[TD="class: productListing-heading, bgcolor: #000000"]Description+[/TD]
[TD="class: productListing-heading, bgcolor: #000000, align: right"]Price[/TD]
[TD="class: productListing-heading, bgcolor: #000000, align: center"]Buy Now[/TD]
[/TR]
[TR="class: productListing-odd, bgcolor: #F8F8F9"]
[TD="class: productListing-data"]772.21707[/TD]
[TD="class: productListing-data"]StopTech[/TD]
[TD="class: productListing-data, align: center"][/TD]
[TD="class: productListing-data"]Banjo bolt - M10x1.0 threads, 20mm length for StopTech calipers[/TD]
[TD="class: productListing-data, align: right"] $5.00[/TD]
[TD="class: productListing-data, align: center"]Buy[/TD]
[/TR]
[TR="class: productListing-even, bgcolor: #F8F8F9"]
[TD="class: productListing-data"]772.21707S[/TD]
[TD="class: productListing-data"]StopTech[/TD]
[TD="class: productListing-data, align: center"][/TD]
[TD="class: productListing-data"]Shortened StopTech Banjo Bolt - M10x1.0 threads, 18.75mm length for assorted OEM calipers[/TD]
[TD="class: productListing-data, align: right"] $6.25[/TD]
[TD="class: productListing-data, align: center"]Buy[/TD]
[/TR]
[/TABLE]
 
Phantom said:
So I'm putting together all the parts I need to do this. I already have the calipers, but I need clarification on the banjo bolt. I know it is shorter and it comes with the stoptech SS lines though there are two options for SS lines. First option is for stoptech calipers and second option is for OEM calipers. The difference is in the banjo bolt and there are two options, 18.75mm and 20mm lengths. Which one?? Also how would one modify the stock banjo? I looked in this thread and no luck...

[TABLE="class: productListing, width: 100%"]
[TR]
[TD="class: productListing-heading, bgcolor: #000000"]Part Number[/TD]
[TD="class: productListing-heading, bgcolor: #000000"]Manufacturer[/TD]
[TD="class: productListing-heading, bgcolor: #000000, align: center"][/TD]
[TD="class: productListing-heading, bgcolor: #000000"]Description+[/TD]
[TD="class: productListing-heading, bgcolor: #000000, align: right"]Price[/TD]
[TD="class: productListing-heading, bgcolor: #000000, align: center"]Buy Now[/TD]
[/TR]
[TR="class: productListing-odd, bgcolor: #F8F8F9"]
[TD="class: productListing-data"]772.21707[/TD]
[TD="class: productListing-data"]StopTech[/TD]
[TD="class: productListing-data, align: center"][/TD]
[TD="class: productListing-data"]Banjo bolt - M10x1.0 threads, 20mm length for StopTech calipers[/TD]
[TD="class: productListing-data, align: right"] $5.00[/TD]
[TD="class: productListing-data, align: center"]Buy[/TD]
[/TR]
[TR="class: productListing-even, bgcolor: #F8F8F9"]
[TD="class: productListing-data"]772.21707S[/TD]
[TD="class: productListing-data"]StopTech[/TD]
[TD="class: productListing-data, align: center"][/TD]
[TD="class: productListing-data"]Shortened StopTech Banjo Bolt - M10x1.0 threads, 18.75mm length for assorted OEM calipers[/TD]
[TD="class: productListing-data, align: right"] $6.25[/TD]
[TD="class: productListing-data, align: center"]Buy[/TD]
[/TR]
[/TABLE]
Click to expand...

Bump, I need to order them also. Does anyone know?
 
I don't remember the exact length needed but shortening the bolt is not that difficult. you can put the banjo bolt in a vice with the head down, threaded hole up, and drill from the top down into the bolt with a very large drill bit. the bit should be LARGER than the diameter of the bolt itself, you're not looking to enlarge the hole you're looking to shave the end of he bolt with the camfer angle of the tip of the bit. this camfer will also allow it to clear the inner flange in the caliper. you don't want to make the bolt too short but you want to insure that the washers will seat well before the bolt actually bottoms in the hole of the caliper... if you can finger tighten the bolt enough to contact both washers and start to snug then the bolt is now short enough, if the bolt is still too long it will bottom and not turn anymore by hand but the washers will still be loose. do not just tighen the bolt at that point because you do not want the bolt to be forced to bottom into the caliper hole. if the bolt bottoms and you still have pla in the washers then measure the gap you have remaining and this is ~ how much more the bolt needs to be shortened. make sure to blow out the bolt and not get any metal shavings into the caliper fluid passages

---------- Post added at 05:43 PM ---------- Previous post was at 05:22 PM ----------

this is from further back in the thread


turbocad6 said:
using the bolts from the stop tech line kit, anyone can do this.there short enough that they don't even need to be cut, just ream the tip slightly.. if you can't do this then have whoever is installing them do it, or anyone who owns a drill... just print out these pictures & say "the bolts need to be drilled at the tip like this"... anyone who can't do this has no business touching your brakes:tongue:... this is as simple as it gets :



1



1



1



1





make sure you blow out the passage ways of metal shavings residue after, it's that easy.... aside from this simple "mod" the fronts are 100% bolt on
Click to expand...
 
Oh that's how you did it, someone mentioned that you shortened them and i figured you used a grinder with a cut off wheel to trim the piece but this is much easier.

Since these have hard lines, couldn't we just use the FX50 or G37 brakes lines?
 
Last edited:
not really, the newer cars use a ridgid line and a flex line assy, the whole thing is too long and cumbersome to use and it doesn't match up well to our spindle setup so no, even having the lines from the newer car is not a good way to go, although I guess it could be done, I wouldn't advise going that route.

also, these pics are from the stop tech bolts which are slightly shorter than the stock infiniti banjo's... the stock bolts can be done too but need a little more trimmimg. they too could be done like this with the drill bit but you may have to dress the edges of the threads after because you will be cutting slightly into the threads too on the stock bolt... I used to have a fine thread nut that matched these threads and with that I would thread the nut on first, grind the end a bit and then just backing the nut back off would chase the threads and clean them up, without a nut to thread on there it can still be done but you have to be careful with the ending of the thread at the cut... hard to explain without a visual but you could just use a small file to dress the end after, make sure the bolt threads in easily and no need to force it, you don't want to strip these fine aluminum threads in the caliper...

also a word on torque, these bolts do NOT need to be severely tightened, because there threading into aluminum and the bolt is hollow so it can be damaged easily, you just want to torque them enough to seat the washers and then a little more for compression but not overly tight... they should be about as tight as you would make a spark plug or something or about as tight as you would tighten a much smaller bolt, like an M6 with a 10mm head... not too tight... you will make a mess if you really crank down on them
 
Turbo you are amazing man, I love your explanations, that's exactly how I like things explained. I know its time consuming but it alleviates further questions. You cover it from every angle !!

What I'll do is order two new stock bolts, locate a nut that can fit over it..I think I have a few or know where I can get them..and just drill them down like you have.

I'm debating on doing rears but not sure if the G37 or the FX50 rears are best..and what list of parts are included. From what I read in your thread, it was knuckles, rotors, calipers, and that special ball joint adapter you had custom fabricated. Do you have those for sale?

I appreciate all your help with this !! I can't thank you enough!!
 
I do still have a few sets of the adapters left. when there gone I doubt I'll do another batch because it's very expensive to do these and I'd need to do like 40 or 50 pieces at least to be cost effective and the demand is not that high, it's taken me years to recoupe the first batch and I still have some left :)

in the rear everything is identical from fx50s to g37s except the rotors themselves... same part #'s and everything for caliper pads and brake hardware, so no difference at all 37 to 50, again except for the rotors because the fx uses a larger emergency brake setup.
 
turbo you have 6,666 posts :eek.: quick post something

---------- Post added at 07:13 PM ---------- Previous post was at 07:12 PM ----------

nevermind :rotfl:
 
So i haven't been on in a few months . but found out today that i will have possession of a g37s to part out for a customer anyone have a list of parts i need to keep?
 
Bklynjohn718 said:
Its ok man lol. Just looking around for some fronts.

Sent from my SAMSUNG-SGH-I717 2
Click to expand...

Hey John, the fronts are yours and if you also want the rears, you can have them too. I just need rears but if you want both, makes more sense for you to take the set. I got a set of fronts today from someone I know.
 
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