gnictry

iTrader: (3)

I know DA/humidity will change results although this seems like too much of a change to just be that. Located in richmond va area.
Its been a few years since ive ran but the car averaged 12.4 at 110 to 112 with rebuilt stock a4 and fuddle 3200 stall. My best pass was 12.0 at 110 two years ago after performabuilt lvl2 trans with circle d 4k stall followed by two passes in the 12.2 range ( spinning) . No changes and the past two times ive been this year the car has ran 13.0 at 103?!
I did fresh fluids, spark plugs, wires, air filter and still 13s. Car idles and drives well, no smoke or hesitations. Any suggestions? If i left out any needed information let me know...

HCI2000SS

iTrader: (2)

Same track as well?

gnictry

iTrader: (3)

Same track
Also same 13s on track i average 12.3 to 12.4 at

gesto

Can you post time slips of some of your old and some of your recent runs?

gnictry

iTrader: (3)

Here my best slip and first pass with the circle d stall

gnictry

iTrader: (3)

Not sure if this is loading correctly but this is a recent slip of a 13s run.

gnictry

iTrader: (3)

Recent 13 at different track




Same night as one above

gnictry

iTrader: (3)

gnictry

iTrader: (3)

Doug G

Are you sure you're getting full throttle ?

Have someone hold it to the floor and you look into the carb (and check travel too) WITH MOTOR OFF

gnictry

iTrader: (3)

Yes full throttle confirmed

Circle-D_Brian

Is the converter still flashing at 4000 rpm or has that changed?

-Brian

gesto

I think you can rule out D/A as the culprit. Your runs in the Fall of 2014 were in the 900 - 1,000 foot range. Your June 17 runs were similar. The D/A on your March runs was negative.

Are you getting excessive tire spin? Do you have any videos of your recent runs? I'm Captain Obvious here but it really looks like you are down on power to the rear wheels.

gnictry

iTrader: (3)

Circle d brian, ill have to got do some flashing as i was a bit nervous/out of practice and i dont recall.

gnictry

iTrader: (3)

Gesto
No videos and looking at my 60ft and feeling the car (launch and mph) i dont have any more tire spin comparing the 12.3/4 runs with the 13s 60 and mph.

I do agree down on power...

gnictry

iTrader: (3)

I have always launch the car on foot brake reving until it wants to push through them in drive. With the circle d 4k is that what works best for the stall?

Circle-D_Brian

It seems to really depend on the setup, but you could try flashing the converter from idle or just above. I don't think this is your problem as it's not usually worth .4 in the 60'. Maybe .1 difference. Something seems off. If you need us to check out the converter we can. Just know we're here for ya.

-Brian

toneloc60

iTrader: (7)

How many miles on the car?

The reason I ask is that last night I was at the track and realized my brakes are slightly dragging and I have about 182,XXX miles on the car. I'm guessing the old rubber lines are allowing pressure to go through upon pedal application, but they're constricting the flow back. I just ordered new braided lines and am hoping that resolves the issue. If not, the master cylinder is getting replaced.

These cars are not new anymore. Just throwing that out there.

gnictry

iTrader: (3)

166k
I don't think its brakes as there isnt excessive heat coming from them.

As far as flash i cant get a good read but its around 3500 rpm.

madmike9396

iTrader: (29)

You lost 7-8 mph in the 1/8 from your previous best. I would pull the spark plugs. one may have a hair line fracture.
Seen a friend's car do this and it was down 30 or 40 hp maybe more don't remember exactly.
his had no mis fires because it was still throwing spark just not a good one.

Easy thing to check and rule out