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Old 08-24-2018, 12:23 PM   #101
Zero Cool
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Quote:
Originally Posted by zack_280 View Post
Also, regarding the non-///M stock fuel system. I took my 'street' car to Barber Motorsports Park last weekend. It fuel starved at 1/2 tank in turn 2/3 and over the back roller coaster turn. So for anyone in the future reading through this, you will need to plan for fuel system improvements if you are racing with less than 1/2 tank.
do you have the M3 fuel baffle installed?
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Old 08-24-2018, 12:47 PM   #102
Zimo32
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Quote:
Originally Posted by Zero Cool View Post
are you using the M56 specific gasket, or the M54 gasket? the M56 has a metal frame in it, and if carefully removed, can be reused.
i will see if it seems loose tonight and get back to you. as of right now, i have no leaks. but i also haven't ran or driven it too much.
Yepp M56 gasket:
https://www.fcpeuro.com/products/bmw...5i-71-36522-00

and

https://www.fcpeuro.com/products/bmw...5i-11127521010

My Nissan might have problems burning oil but at least it doesn't leak when I use brand new gaskets! These damn germans, plastic valve covers, sub frames that rip out of the car, oil pump nuts that come loose....
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Old 08-24-2018, 12:57 PM   #103
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Quote:
Originally Posted by Zero Cool View Post
do you have the M3 fuel baffle installed?
No. Just stock non-///M fuel system.
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Old 08-24-2018, 10:15 PM   #104
Zero Cool
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Quote:
Originally Posted by Zimo32 View Post
Quote:
Originally Posted by Zero Cool View Post
are you using the M56 specific gasket, or the M54 gasket? the M56 has a metal frame in it, and if carefully removed, can be reused.
i will see if it seems loose tonight and get back to you. as of right now, i have no leaks. but i also haven't ran or driven it too much.

Yepp M56 gasket:
https://www.fcpeuro.com/products/bmw...5i-71-36522-00

and

https://www.fcpeuro.com/products/bmw...5i-11127521010

My Nissan might have problems burning oil but at least it doesn't leak when I use brand new gaskets! These damn germans, plastic valve covers, sub frames that rip out of the car, oil pump nuts that come loose....
That's odd, I have the same gaskets and no issues. Did you by chance forget to pull out the old spark plug tube gaskets?


Quote:
Originally Posted by zack_280 View Post
Quote:
Originally Posted by Zero Cool View Post
do you have the M3 fuel baffle installed?
No. Just stock non-///M fuel system.
Ok, I guess that's good since I have the M3 baffle and have read good things about it.
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Old 11-27-2018, 03:58 PM   #105
BryanPendleton
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Most of the "slowness" in filling modern fuel tanks is the car, rather than the jugs, but as mentioned the Hunsakers are the best investment with regard to jugs. But the biggest restrictor is usually the car. Few tips:

1) remove the unleaded restictor in the fuel line as mentioned.
2) make sure your fill nozzle sits below where the vent line intersects the fill line. If you can run a "seal/barrier" to prevent splash from backing up into the vent you will minimize venting issues.
3) the biggest issue usually is the evap crap on the tank itself. Slows the venting process. Prevents fully filling the tank. Removing this will pay dividends.

Different application, but with the above we have been able to dump 5gal/20seconds.
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Old 11-29-2018, 04:52 PM   #106
Zimo32
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Quote:
Originally Posted by BryanPendleton View Post
Most of the "slowness" in filling modern fuel tanks is the car, rather than the jugs, but as mentioned the Hunsakers are the best investment with regard to jugs. But the biggest restrictor is usually the car. Few tips:

1) remove the unleaded restictor in the fuel line as mentioned.
2) make sure your fill nozzle sits below where the vent line intersects the fill line. If you can run a "seal/barrier" to prevent splash from backing up into the vent you will minimize venting issues.
3) the biggest issue usually is the evap crap on the tank itself. Slows the venting process. Prevents fully filling the tank. Removing this will pay dividends.

Different application, but with the above we have been able to dump 5gal/20seconds.
Thanks I was about to start diving into this over the weekend. Bought the Hunsakers, ill start taking apart the filler and see what to do from there.
Any reason to not swap out the stock filler neck with something like this?https://www.wescoperformance.com/rec...QaAkkwEALw_wcB

I measured the stock tube off the fuel tank to be 1.75".
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Old 11-29-2018, 05:49 PM   #107
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OT....

With the Z32, I'm assuming you know who Mike Kojima is.
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Old 12-01-2018, 02:23 PM   #108
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^^ Well i know him now lol.

I removed the restrictor so now I'm just waiting on my fuel jugs to see if it works.
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Old 12-04-2018, 10:43 PM   #109
Zimo32
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With this modification and the Hunsaker fuel jugs, fills in about 29 seconds. Maybe 25 seconds since i was a little slow get the jug up vertical, fuel tank is completely full so I couldn't do a second run to confirm. Only other thing i might do is delete the carbon canister and see if that speeds it up a bit.
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Old 02-13-2019, 03:00 PM   #110
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Made some changes.







Pretty cool to see just how badly these rotors get abused. Pulled from my 300zx which always roasted the brakes on the track.
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Last edited by Zimo32; 02-13-2019 at 03:03 PM.
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Old 02-13-2019, 03:26 PM   #111
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Nice! How did you do the front transition to a single pipe?
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Old 02-13-2019, 05:08 PM   #112
Zimo32
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its an old bimmerworld y pipe for an e36 that i picked up for cheapand extended 5".
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Old 02-18-2019, 09:58 AM   #113
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We had been using zip ties to secure our kill switch for all of 2018, finally made something little more secure.





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Old 02-18-2019, 10:00 AM   #114
Ettinger
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Excellent thread, Zimo32

Quote:
Originally Posted by Zero Cool View Post
do you have the M3 fuel baffle installed?
My BLT drive is broken
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Old 12-13-2019, 01:00 PM   #115
Zimo32
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Haven't updated in a while. We a slight front end incident this year. Changed around some wiring so that all my connections were fused.




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