NASA PT/TT thread
#379
Registered
Thread Starter
Were you below a third of a tank? As you probably know fuel slosh in your tank will lead to fuel starvation in extended high G turns. Often this will manifest itself on the straight AFTER the turn as it can take a while for the air bubble to travel down your fuel line.
I replaced the fuel assembly a month ago.. the syphon hose looked weak as if it could kink easily but I didn't have time left to order a new one and replace it.
It is happening above 3/4 of a tank. I fill the tank up and run one 20 minute session fine; it will stutter on the second session.
#380
Registered
Thread Starter
Next event is the NASA Eastern Championship in Road Atlanta in late August. I have time to figure it out.
#382
A 0.5 gal surge tank works wonders in our Chump E30. We've been on track with no starvation and under 2qts in the main tank. Only costs about $100 and an afternoon for a complete setup. I would recommend adding mounts (we use hose clamp around cylindrical tank) in addition to the welded aluminum tabs on the plate. Aluminum fatigues easily and is weak when welded without a post weld heat treat.
#385
Registered
Thread Starter
The siphon hose looked weak/soft. I will have to take it apart in order to give you more details. My guess is that there is no gas moving from the right side to the left whatsoever.
#388
Registered
Thread Starter
Fuel pump assembly was replaced a month ago (factory). It could still be the pump! I don't know. Any ideas are welcome.
Here's a video - stuttering happening at 1:23
Here's a video - stuttering happening at 1:23
#389
Registered
Thread Starter
More on fuel delivery issue: Please check this thread and let me know your opinion. Thanks!!
https://www.rx8club.com/series-i-tro...l-line-254071/
https://www.rx8club.com/series-i-tro...l-line-254071/
#391
No respecter of malarkey
iTrader: (25)
The pump is running without load in that condition, not the same thing as on a running engine
That also means it won't be bypassing, which then also won't siphon fuel from the other side
If you're running it by grounding the check connector per the fuel pump test it's also only running in the low speed mode
That also means it won't be bypassing, which then also won't siphon fuel from the other side
If you're running it by grounding the check connector per the fuel pump test it's also only running in the low speed mode
#392
Registered
Join Date: Feb 2011
Location: Houston, TX
Posts: 326
Likes: 0
Received 0 Likes
on
0 Posts
NASA Nationals East
I'll be headed to this event at Road Atlanta (with my MR2 though) - anyone in the general area is welcome to come check it out, $40 ticket for the weekend or $20 for Sunday only being the only downside over a normal regular ol' race weekend but still much cheaper than a pro level race with just as good competition if not moreso in some classes. Should be lots of good racing to watch!
Schedule and such availible at the link below:
NASA Championships Presented by Toyo Tires ? East
I'll be in Group E, running PTF class, car #6. Race on Fri, Race on Sat, Main Event Race on Sunday.
Heberto will be there with his S1 RX8 in Group I running TTC, car #145. Time Trials is best time you are able to run during the event, usually see a few tenths cover all of the podium spots...
Schedule and such availible at the link below:
NASA Championships Presented by Toyo Tires ? East
I'll be in Group E, running PTF class, car #6. Race on Fri, Race on Sat, Main Event Race on Sunday.
Heberto will be there with his S1 RX8 in Group I running TTC, car #145. Time Trials is best time you are able to run during the event, usually see a few tenths cover all of the podium spots...
#395
Registered
Join Date: Feb 2011
Location: Houston, TX
Posts: 326
Likes: 0
Received 0 Likes
on
0 Posts
for those not in the area, web coverage here:
NASA Nationals East
NASA Nationals East
#396
Registered
for those not in the area, web coverage here:
NASA Nationals East
NASA Nationals East
Good luck y'all!
#397
Registered
Thread Starter
Finally... back home from Road Atlanta. My 1:42s was no match to 1:39s from S2000... That said, it was a lot of fun! Tough track to tackle over one weekend.
The overall NASA Championship experience was the best part. Mazda was also very supportive and organized a nice dinner for all Mazda racers.
Now back to work on the driver mod!
The overall NASA Championship experience was the best part. Mazda was also very supportive and organized a nice dinner for all Mazda racers.
Now back to work on the driver mod!
#398
Registered
etzilon: 1:42's are hauling it in an RX-8 around that track. You should be proud of your time. Sorry I didn't make it over to see you. You learned the track well in such a short period of time.
kbrewmr2: understand you got the shaft after taking the championship. That's a real bummer. Sorry to hear that Ken.
kbrewmr2: understand you got the shaft after taking the championship. That's a real bummer. Sorry to hear that Ken.
Last edited by SilverEIGHT; 09-01-2014 at 07:05 PM.
#399
Registered
Thread Starter
Thanks, Silver. Data says a 1:39 is possible; I just need consistency.
FWIW, I tried a DTC60 combo all around on Sunday and I did NOT like it as the rear tires are stressed too much and went off rather quickly (wiggly going down T11 was not fun). I am going to try DTC70 in the front and keep DTC60s in the rear.
FWIW, I tried a DTC60 combo all around on Sunday and I did NOT like it as the rear tires are stressed too much and went off rather quickly (wiggly going down T11 was not fun). I am going to try DTC70 in the front and keep DTC60s in the rear.
#400
Registered
I have had that same thing happen with DTC60's all around. Kind of unsettling. Makes riders freak! Never lost it but I do agree on different fronts.
Where did the data tell you that you were loosing time? Do you have a video?
Where did the data tell you that you were loosing time? Do you have a video?