Mr. 25/8 M30 Project.

Post pics of your Infiniti M30s or Nissan Leopards. ALL Z31 and R31 owners, please post your cars at the section below.
CLASSIC F31
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Re: Mr. 25/8 M30 Project

Post by CLASSIC F31 » Fri Oct 15, 2010 6:48 am

What I don't understand though are the brakes. I bled them all including @ the booster but there isn't enough bite on the pedal. I mean the pedal has to go down quite a bit before it starts to stop. I have the BM-50 (stock MC) on now, but some how doubt thats the problem. I mean, didnt some z32s come with the bm50 from the factory? Regardless, I have a bm-57 (1-1/16 MC) sitting here that I might have to swap out if I can't figure this out...and yes the bleeder valves are all at the top so calipers were installed correctly, and they were bled until no more air was visible through the clear lines...Any tips or suggestions?
If you kept the ABS system, that has to bled as well.

BTW Great progress.
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Mr. 25/8
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Re: Mr. 25/8 M30 Project

Post by Mr. 25/8 » Fri Oct 15, 2010 8:33 am

CLASSIC F31 wrote: If you kept the ABS system, that has to bled as well.

BTW Great progress.
Thanks. I didn't keep the ABS. I guess I'll re-bleed the whole system again. :(
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mmmjesse
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Re: Mr. 25/8 M30 Project

Post by mmmjesse » Fri Oct 15, 2010 5:22 pm

Mr. 25/8 wrote:
CLASSIC F31 wrote: If you kept the ABS system, that has to bled as well.

BTW Great progress.
Thanks. I didn't keep the ABS. I guess I'll re-bleed the whole system again. :(
So you completely removed the abs pump and all?
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Mr. 25/8
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Re: Mr. 25/8 M30 Project

Post by Mr. 25/8 » Sat Oct 16, 2010 10:43 am

mmmjesse wrote:
Mr. 25/8 wrote:
CLASSIC F31 wrote: If you kept the ABS system, that has to bled as well.

BTW Great progress.
Thanks. I didn't keep the ABS. I guess I'll re-bleed the whole system again. :(
So you completely removed the abs pump and all?
No sir. Its still there. I bled that too. :?
CLASSIC F31
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Re: Mr. 25/8 M30 Project

Post by CLASSIC F31 » Sun Oct 17, 2010 6:21 am

One other observation which I noticed when I flushed my brake system. Did you check the vaccum line from the booster to the intake manifold? Make sure that the check valve in that line is working properly. Also, the whole line should be clear of any obstructions. My check valve was alright, but a plastic connector that had been added to the line had not been cleaned properly and it was causing a very low pedal condition and very poor braking.
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Mr. 25/8
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Re: Mr. 25/8 M30 Project

Post by Mr. 25/8 » Wed Oct 20, 2010 5:12 pm

CLASSIC F31 wrote:One other observation which I noticed when I flushed my brake system. Did you check the vaccum line from the booster to the intake manifold? Make sure that the check valve in that line is working properly. Also, the whole line should be clear of any obstructions. My check valve was alright, but a plastic connector that had been added to the line had not been cleaned properly and it was causing a very low pedal condition and very poor braking.
Thanks for the info, I just took apart the whole line and cleaned everything out...looked clean to me. Either way, I don't like the pedal feel, so I am moving up to a bm-57 this weekend.
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Re: Mr. 25/8 M30 Project

Post by si3 » Sun Oct 24, 2010 12:56 pm

a i was wonderin wat u did with the old rear shock since u replaced them and if u still have them would u sell them
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Re: Mr. 25/8 M30 Project

Post by iLLBiLL » Mon Oct 25, 2010 6:46 am

Mr. 25/8 wrote:
Thanks for the info, I just took apart the whole line and cleaned everything out...looked clean to me. Either way, I don't like the pedal feel, so I am moving up to a bm-57 this weekend.
That z32 bmc should help out, I didn't think the M's bmc would make a very noticeable difference but they could be proportioned differently which would make a significant difference. Your car is coming along very nice btw, I like the "project" instead of "show car" change, haha.
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Mr. 25/8
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Re: Mr. 25/8 M30 Project

Post by Mr. 25/8 » Sun Nov 28, 2010 11:29 pm

I went thru 2 (two), yes count them ladies and gentlemen, 2 leaky bm-57's. WTF is this?? First I overpay for one on ebay, $150. Get it, and it is leaking where the bmc meets the booster, guessing bad seals? Well then I order another from O'reillys for $70, turns out it was leaking too. Keep in mind, this is already $50+ in Dot 4 Brake fluid... So I just returned it and put the bm-50 back on and bled the shit outta it. Compared to the bm-57:

Bm-57: Pedal travels too far down, almost touching the floor before the car comes to a stop. Caca, didnt like it.
Bm-50: Pedal now only has to travel slightly in order for the car to stop.

Keep in mind, the booster rod was adjusted for each bmc right up to the point where the calipers wouldnt clamp the rotors when the brakes weren't applied. Overall, I've gotten use to the Z32 brakes over the stocks. I made this observation:

Stock M30 brakes: Initial bite/stop is great, however the brakes dont stop the car as fast as the z32s do from a rolling 60+mph.
Z32 brakes: Initial bite is not there (so in 20mph or less, I'd have to say the stockers would stop the car just as good if not better than the z32s) Buuut, at higher speeds (20mph+), brakes stop the car amazingly well!

I have a laser thermometer and after a couple hard stops from 60mph, the front rotors are at 160-170F and 140-150F for the rears. I'm guessing this is normal. But I do smell a pretty strong burning smell coming from the caliper/rotors, kinda like an iron, or like a space heater set too hot. I dunno, I guess its just the hawk street pads...
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Mr. 25/8
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Re: Mr. 25/8 M30 Project

Post by Mr. 25/8 » Sun Nov 28, 2010 11:29 pm

A small review on the Parts by Max s13 Suspension. I have tried the following combinations:

Front/Back:

10k/8k: Very stiff, car moves with any bump on the road, I'd say pretty uncomfortable for city driving, but has the best handling of all.
8k/6k: Somewhat softer ride, but suspension travels too much for my liking. Had to raise the car so tires wouldnt rub, still uncomfortable.
10k/6k: Some how this combo felt the best. Front end has minimal travel, and handling/fast turning is great! No rub when super low. Rear is much softer with the 6ks, feels more comfy

Currently I have it on 10k/8k and it'll probably stay that way for a while. Dampers are set two clicks away from max soft. They have 10 clicks total. After spending some solid time cruising on all setups, I'd have to say these coilovers are definately for the track. My previous review was based on a quick drive around the block, so disregard it. Im ok with this setup, could be better though... I don't think its so much the springs, but the dampers which make the ride a bit more...rigid.
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Mr. 25/8
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Re: Mr. 25/8 M30 Project

Post by Mr. 25/8 » Sun Nov 28, 2010 11:57 pm

I'm a picture guy, so here are pics of everything. All taken with an iPhone 4:

Bm-57s
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8ks left, 10ks right
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Changing out the springs, you can see the leak of brake fluid.
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New 90A alt, replaced the burnt one due to audioz lol
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Painted the rear thingy, looked tacky being white
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Mr. 25/8
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Re: Mr. 25/8 M30 Project

Post by Mr. 25/8 » Mon Nov 29, 2010 12:06 am

And here are some of how it sits now. Mods, sorry for all the posts, I tried doing it all in one post but the text editor screws up and doesn't let me see what I'm typing once I get to a certain level of words...

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Getting compliments left and right lol. The rears are raised as you see in the pics, and aren't cambered that bad, just a slight tilt. The fronts I think I need 17x8s as the 9s stick out like an inch from the fenders (no Im not rolling my fenders). And thats that I have the camber plates maxxed...has a slight tilt inwards...matches the rears at least lol.
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Re: Mr. 25/8 M30 Project

Post by ez22 » Tue Nov 30, 2010 12:40 am

Very nice. Did you put any preload in the coilovers at all?
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Mr. 25/8
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Re: Mr. 25/8 M30 Project

Post by Mr. 25/8 » Tue Nov 30, 2010 9:20 pm

0 preload. Would you recommend it, and if so, how much?
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ez22
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Re: Mr. 25/8 M30 Project

Post by ez22 » Tue Nov 30, 2010 9:45 pm

It depends if you need it or not. I would take out all the preload in the springs and then adjust a little if necessary. Also try setting your dampers to mid way and set those to the different spring rates that are on them. Why don't you want to roll your fenders? The fronts are easy to do. Man, we are going to have to meet up some day and get the Ms together.
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