Glenn's dragster thread

[GlennLever]

Well we really wanted to test this weekend. I want to go to Norwalk for NDRL

Briggs and Stratton Summer Jam
at the Blue Suede Cruise
Summit Motorsports Park
Norwalk, OH

http://www.frontenginedragsters.org/forum/index.php?topic=48.0
http://summitmotorsportspark.com/index.php/component/jevents/icalrepeat.detail/2013/07/21/74/-/-?Itemid=1

We still do not have the 8.5 index straightened away and kind have hit the physical limit of slowing down with air fuel mixture (top pulley cannot be any larger without changing the belt guard and the bottom pulley is a 42 tooth pulley and has the drive for the belt for the fuel pump inside).

We have made the adventurous decision to go for the 8.0 index instead.

Empire was rained out Friday, washed out Saturday, so we decided to drive two hours to go to Esta Safety Park Dragstrip‎, 8091 Eastwood Road, Cicero, NY 13039. Got up at 5 in the morning to leave by 6 (two hour drive), got within 10 minutes of it and received it was closed due to flooding.

Plans now are to blow off club racing July 12th for testing for Norwalk.

[GlennLever]

Well did some test and tune today to work on .400 Pro Tree and 8.50 index racing. Been working off and on on this for awhile now with not too much success. The vehicle has been too fast and I have been too slow.

The plan is to go to the NDRL race at Edgewater Sports Park Cleves, Ohio in two weeks. I have never run a pro tree and an index so this will all be new to me.

First run, Saturday 1:33 PM August 10
Air Density 2317
Top Pulley 63
Bottom Pulley 42
Pill 110
Top end Fuel Pressure 53.82
Top end Boost 6.74
Reaction time a perfect .400 !!!!!!!!!!!!!!!!!!!!!!!!
60 foot 1.275
¼ mile   8.467 / 159.23 MPH
A/F ratio 4.048
Comments, Seem dead off the launch, engine RPM graph was flat after launch, two peaks in g-force after launch, short shifted by 300 RPM to second gear

Second run, Saturday 3:11 PM August 10
Air Density 2413
Top Pulley 63
Bottom Pulley 42
Pill 113 Leaned it out a little
Top end Fuel Pressure 49.83
Top end Boost 6.94
Reaction time  .423 not to bad
60 foot 1.275
¼ mile   8.526 / 159.20 MPH
A/F ratio 4.152 
Comments, Air was a little worse, and took a little fuel away, I hit the limiter for a brief second before the shift to second. Second good light on the pro tree, ET would be ok for a 8.500 index

Third run, Saturday 4:57 PM August 10
Air Density 2280
Top Pulley 63
Bottom Pulley 42
Pill 113 Leaned out a little
Top end Fuel Pressure 47.72
Top end Boost 7.07
Reaction time  .389  Oops
60 foot 1.267
¼ mile   8.451 / 162.27 MPH Fastest speed I have run yet, I have run faster ETs, but not speed
A/F ratio 4.175 
Comments, By the time I ran after sitting in the staging lanes the air got better, was to fast again, Shift to second was right on

Forth run, Saturday 6:52 PM August 10
Air Density 2077
Top Pulley 64
Bottom Pulley 42
Pill 113 Leaned out a little
Top end Fuel Pressure 48.12
Top end Boost 6.68
Reaction time  .394 two in a row
60 foot 1.272
¼ mile   8.504 / 158.45 MPH I can live with this for a 8.500 index!!!!!!!!!!!
A/F ratio 4.138  This may be the magic number with the 113 bypass pill (adjust pulleys to get A/F Ratio)!!!!!!!!!!!!!!!!!!!!!!!A touch fatter than the 8.526 run, slowed it down perfect.
A great day of testing, we are in the ball park!

[masracingtd1167]

Look's like you had a good weekend also ! Good luck at Norwalk I hear that it's a great track.

[GlennLever]

Look's like you had a good weekend also ! Good luck at Norwalk I hear that it's a great track.

Edgewater Park in Ohio not Norwalk yet

[masracingtd1167]

Glen did you get a chance to race last weekend?

[GlennLever]

Glen did you get a chance to race last weekend?

Tes, but cannot race this weekend at Edgerwater, I am having some back problems

[GlennLever]

A Friend picked this up from Bang Shift and sent it to me

"Steve and Glenn are in Epping NH for the first New England Hot Rod Reunion.
Rain cancelled the racing Thurs. Glenn got a time trial in on Friday before the rain and had his car pictured
on the Bangshift.com site that it also live streaming the racing. Weather looks good for Sat.

Here is the link to the live streaming on the internet and a picture of Glenn, Anne and his son George at the starting line ( green shirts)
He has the full body on to make the car look extra nice !"

[GlennLever]

Well, we lost .5 of a second and have been looking for it. Pulled the transmission,



and had the torque converter cut to check it, Put it back in



not there, compression check all good not there, check data recorder for lost values, fuel pressure, boost etc. not there, changed out the MSD box, hope that was it, will test and tune this Sunday, next week we want to go to Bowling Green and will regardless.

Only hint we have is fuel out the exhaust on launch, 60 foots are terrible.

[GlennLever]

I'm post this here first so I can link to the pictures and put them in the middle of the text .

We went and did some test and tune today.

The symptom we have is the engine comes up to RPM on the trans brake, I release the trans brake and the dragster launches, and then falls on its face. It then picks’s itself up and has a pretty normal run. I hit my shift point at 6300 RPM, RPMs drop off as you would expect and then climbs again.

What is pictured below and in the attached files (not sure which is easiest for you to view) is a graph produced in the data logger.

It appears to show a drastic drop in fuel pressure before the slump in engine RPM. The first graph shows the complete run. The second graph is just the area between the blue vertical lines to zoom in on the troubled area.

This is the zoom in on the trouble area.
When the engine RPM reaches 4756 the fuel pressure is at 31.92 pounds.
When the engine RPM reaches 4810 the fuel pressure has dropped to 3.37 pounds.
When the engine RPM drops to 3527 the fuel pressure recovered to 16.13 pounds and continues to climb.

The red vertical lines are for reference between the two graphs of fuel pressure and engine RPM.

If we lean the engine out (not changing the fuel main bypass, but add air by decreasing the top pulley the problem is not as pronounced. We are blowing fuel out the number 8 cylinder.

This graph represents an 8.904 ET run in the ¼ mile
We lean it out and ran an 8.409

We have check compression, valve lash, put in a new MSD box, New coil, removed the primmer, check timing, increased timing to 30 degrees, check the inside of the distributor cap, remove and cut open the torque converter (no problems found)

[GlennLever]

Arrived at NDRL race in Bowling Green yesterday.

Wired up the flapper I n the tank and made 4 time trials.

The problem is not completely fixed but better.

We have been trying to run an 8.5 index all summer.

Decided that as this is the last race of the season to push it a little harder.

first pass was 8.371, second was 8.129,

third we leaded it out and pushed more air had a .040 r/t on the .400 pro tree and ran 8.035 and on the fourth pass had a reaction time of .037 and ran 8.093 on the same tune and the a/d had gone away by 200 feet.  I think we are in the ball park, but still the fuel pressure drops a little off the line???

[GlennLever]

I have made the decision that our racing season is done for this year so this weekend the engine and transmission come out of the dragster and the dragster will get stored for the winter (need help to get it back up the drive way this Saturday, normal Car Nut time 9:00 AM). Need to build a shipping crate for the transmission.

That means work on the Gasser starts in two weeks.

Anyone thinking of coming please let me know so that food and drink are on hand.

[GlennLever]

Truly a sad moment, the end of summer, the Jeep has its top and doors back on and ready for storage, and the dragster is in pieces.

[Paladin AA/FA]

I really like how you, "adjusted" the wall to fit the dragster in your shop. 

[GlennLever]

I really like how you, "adjusted" the wall to fit the dragster in your shop.

That gets a lot of attention, it goes to the enclosed back porch, not the living room as so think.

[Paladin AA/FA]

You must have a very understanding wife!!