Odd question: CJM RRP vs 2 piece brake rotors

Evildky · 04-19-2022, 05:31 PM

I did an upgraded pump and the hat when my hat broke. I'm able to run down to like 1/4 with no issue at autocross. I haven't been back to the track since I made this change but I suspect the more powerful pump is able to pull better siphon nearly eliminating this problem.

OptionZero · 04-19-2022, 10:37 PM

Phunk recommended it as the best available alternative when his v1 was discontinued and his v2 is not ready, so that seems like the best vouch u can get

Im just waiting for the v2 rpp

2011 Nismo#91 · 04-20-2022, 05:41 AM

Get a brake fluid tester from amazon or anywhere. They are pretty cheap ~$10usd+ fresh batteries and will save you worrying about too much water. Also Castrol SRF fluid is much less water absorbent the RBF and works just as good but it costs more. Either way I would not recommend you go out on the track without a track brake fluid, that little headache can costs you a lot if your brakes fail at the wrong time.

DarkJak · 04-20-2022, 06:42 PM

I can vouch for the Radium unit also. Install instructions were great, and car ran down to 0 dots on the gauge at full tilt at Road America (including through the carousel, with aero)

They discontinued the kits that included pumps (great, because that was really hard to navigate) and now have the kits available where you have to supply your own pump.

The kit made for the 450lph walbro pumps are quick to ship out, and the pump is like $100 separately.

Shoeshear · 04-20-2022, 10:47 PM

Quote:

Originally Posted by DarkJak

I can vouch for the Radium unit also. Install instructions were great, and car ran down to 0 dots on the gauge at full tilt at Road America (including through the carousel, with aero)

They discontinued the kits that included pumps (great, because that was really hard to navigate) and now have the kits available where you have to supply your own pump.

The kit made for the 450lph walbro pumps are quick to ship out, and the pump is like $100 separately.

Ah, that's good to hear. Okay, I guess I need to do a little more research on the radium units then and I'll probably head down that route unless there's any word from CJM. Thanks for your input!

cv129 · 04-21-2022, 11:09 AM

Quote:

Originally Posted by OptionZero

Phunk recommended it as the best available alternative when his v1 was discontinued and his v2 is not ready, so that seems like the best vouch u can get

Quote:

Originally Posted by DarkJak

I can vouch for the Radium unit also.

I do remember Charles' reply to an FB post complaining about extended wait time for CJM RRP (3rd party vendor incorrectly shows "in stock", not CJM's fault), that if one can't wait for the RRP, the Radium unit is an alternative.

Elmo370z · 04-25-2022, 10:32 AM

Quote:

Originally Posted by Shoeshear

I got very light fade at the end of the 20 minute sessions with project Mu pads, and essentially none with CT XP8 which is what I'm running now. I did manage to boil the fluid though, but after a full flush, haven't had it boil again. I haven't gotten the chance to run with 200TW tires and the brake ducts yet, but hopefully that will fend off any fade or fluid boiling issues.

I have been looking at the radium "kit" over the weekend, but it seems much less self-contained than phunk's RRP and somehow they made the install seem more complicated thank what I've read up on the RRP. Not sure what's going on there.

I think I'm going to skip the Z1 hydramat option. The collective knowledge seems to indicate that going with some kind of surge-tank design is the move.

I haven't been running RBF because it's still a sort of daily driven car (less and less with each passing week) and I didn't want to deal with the more frequent bleeds since it absorbs a bit more water than the standard fluid.

Other than being a bit less shiny, any thoughts from any of you on the Radium unit? Does it work as well? My next few months are looking like absolute shite (back to working 80-100hrs/week), so I feel like it's probably worth waiting for phunk to bring some goodies to the table (phunk if you read this, pretty please???).

What fluid are you using? Are you bleeding some
Of that fluid out after each track day? If not then spend the money once and do srf.

04-19-2022, 10:37 PM	#17 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,160 Drives: 15 370Z Nismo 6MT Rep Power: 203226	Phunk recommended it as the best available alternative when his v1 was discontinued and his v2 is not ready, so that seems like the best vouch u can get Im just waiting for the v2 rpp JARblue, cv129 and KapitalZ like this. __________________ OptionZero Build Thread

04-20-2022, 05:41 AM	#18 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,381 Drives: slowly Rep Power: 33858	Get a brake fluid tester from amazon or anywhere. They are pretty cheap ~$10usd+ fresh batteries and will save you worrying about too much water. Also Castrol SRF fluid is much less water absorbent the RBF and works just as good but it costs more. Either way I would not recommend you go out on the track without a track brake fluid, that little headache can costs you a lot if your brakes fail at the wrong time. JARblue, Shoeshear and KapitalZ like this. __________________ GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs

04-20-2022, 06:42 PM	#19 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,390 Drives: 2009 370Z Rep Power: 13448	I can vouch for the Radium unit also. Install instructions were great, and car ran down to 0 dots on the gauge at full tilt at Road America (including through the carousel, with aero) They discontinued the kits that included pumps (great, because that was really hard to navigate) and now have the kits available where you have to supply your own pump. The kit made for the 450lph walbro pumps are quick to ship out, and the pump is like $100 separately. Hotrodz, Shoeshear and KapitalZ like this. __________________ @stupidtoycars \| My track vids 09 7AT\|MCS 2WNR\|Topgunz Rotrex\|Ecutek (Eugene)\|Maxxis RC1\|Titan-7 TS-5\|OSG LSD\|Rear Mount Derale Oil Cooler (WIP)+25 Trans Cooler\|Fismo\|G-LOC R12/R10\|Zeta III L\|NLR Wing and Splitter\|CJM Pan and Fuel Hat\|Radium Surge Tank\|AP Racing CP9668

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04-19-2022, 05:31 PM	#16 (permalink)
Evildky Base Member Join Date: Aug 2020 Location: Louisville, KY Posts: 89 Drives: 13 Nismo STU/T3 Rep Power: 10186	I did an upgraded pump and the hat when my hat broke. I'm able to run down to like 1/4 with no issue at autocross. I haven't been back to the track since I made this change but I suspect the more powerful pump is able to pull better siphon nearly eliminating this problem.