The Official Hot Rod Thread - Part 4: Burnouts for Distance

[Brad69]

Wife lined up with a Hemi Cuda!

 

[bobzilla]

Solo car? Or rally car?

Grid Life Time Attack

 

[bobzilla]

Had a fun weekend. Rust was extremely thick and the shoulder not as willing as I’d hoped. Still not DFL and had a great time. Car lost a **** ton of power it doesn’t have to lose Sunday. Drive home was quiet and I realized that all I hear now is intake noise and no exhaust. Looks like the oil burning may have clogged the cat. It was struggling to cross 36 going across Missouri to go up any hill and we were down 5mpg on the return trip.

Noticed it on the 4th lap of the morning session, the guy I’d been battling with (at the time we were seperated by less then .1 over a 2 minute road course so we were nose to tail in a lot of places) I was no longer pulling on the two main straights. The second session I was down 4 seconds and 4mph on the back straight (exits uphill onto the straight) and 3 mph on the front straight but all my corner exit speeds were higher. Power was just not there.

 

[bobzilla]

Best of the weekend

 

[bobzilla]

Photos from HERE

 

[ChristianPatriot]

Dude is just a wheelman no matter what he gets in lol

 

[femurphy77]

Finally got it running, now to get it sorted out.

 

[55fairlane]

Incase you gear heads haveseen the thread on this in the break room , come out to the Indiana model engine show, internal combustion, sterling and live steam steam.....you will not want to miss this......

 

[gregkl]

Incase you gear heads haveseen the thread on this in the break room , come out to the Indiana model engine show, internal combustion, sterling and live steam steam.....you will not want to miss this...... View attachment 303180 View attachment 303181 View attachment 303183

Is that your Vega in the shop?

 

[bobzilla]

Finally got it running, now to get it sorted out.

View attachment 303033

Mmmmm ground pounders.

 

[55fairlane]

Is that your Vega in the shop?

Yes sir matching his & hers cars.....not mine....

 

[gregkl]

Yes sir matching his & hers cars.....not mine....

Had one back in’76

 

[ChristianPatriot]

Finally got it running, now to get it sorted out.

View attachment 303033

Nothing better than a well executed widebody in my opinion

 

[Mounty09]

I've been fighting fouling spark plugs for a little while now and finally decided to figure out what was causing it. After some research I found that some people who run a Super Vic intake with a carburetor have lean issues on the 4 corner cylinders. When the same intake is used for EFI the 4 corner cylinders run rich.



I decided to do some individual cylinder fueling with the EFI. I added 10% more fuel to the inside 4 cylinders and allowed the computer to remove fuel across all cylinders. This picture is after a WOT pull with immediate shut down. The Right plug is a front cylinder and the left plug is a middle cylinder. Still a little rich but moving in the right direction.



These plugs are from the drive home after the WOT pull. They look much better than before but I decided to put an additional 5% more in the center for a total of 15% more. Loaded up 8 new plugs for racing Friday night if it doesn't rain.

 

[thunderchicken]

I've been fighting fouling spark plugs for a little while now and finally decided to figure out what was causing it. After some research I found that some people who run a Super Vic intake with a carburetor have lean issues on the 4 corner cylinders. When the same intake is used for EFI the 4 corner cylinders run rich.

View attachment 304852 View attachment 304853

I decided to do some individual cylinder fueling with the EFI. I added 10% more fuel to the inside 4 cylinders and allowed the computer to remove fuel across all cylinders. This picture is after a WOT pull with immediate shut down. The Right plug is a front cylinder and the left plug is a middle cylinder. Still a little rich but moving in the right direction.

View attachment 304854

These plugs are from the drive home after the WOT pull. They look much better than before but I decided to put an additional 5% more in the center for a total of 15% more. Loaded up 8 new plugs for racing Friday night if it doesn't rain.

View attachment 304855
View attachment 304856

What heat range plugs are they?
Are the WOT plugs on spray or motor only?
Can you run a gasket seal plug that would allow you to index your plugs? That allows some control of where the flame front is in the cylinder.

They're definitely getting better but wow that first set was crazy fat. What ignition box are you running? If it has the ability, you could add a degree or two of timing to the corner cylinders. Or you could run a little hotter plug in the corner holes.

The intake issue on a carb set up is because the corner runners are longer and not as inline with the carb. So, the corners suck in less fuel causing them to be more lean. On an EFI set up if the injectors dump an equal amount of fuel it causes the over rich condition in the corners, because the longer runners have a lower air speed.

Back when we ran a single carb, we ran a little more fuel jet in the fogger for the corners. It kept them from being lean.

 

[Mounty09]

What heat range plugs are they?
Are the WOT plugs on spray or motor only?
Can you run a gasket seal plug that would allow you to index your plugs? That allows some control of where the flame front is in the cylinder.

They're definitely getting better but wow that first set was crazy fat. What ignition box are you running? If it has the ability, you could add a degree or two of timing to the corner cylinders. Or you could run a little hotter plug in the corner holes.

The intake issue on a carb set up is because the corner runners are longer and not as inline with the carb. So, the corners suck in less fuel causing them to be more lean. On an EFI set up if the injectors dump an equal amount of fuel it causes the over rich condition in the corners, because the longer runners have a lower air speed.

Back when we ran a single carb, we ran a little more fuel jet in the fogger for the corners. It kept them from being lean.

They are NGK 7 range. A little cold for NA but I think right for nitrous
The WOT plugs are just motor
I haven't looked into indexing the plugs

Timing is all controlled by the Holley and I can add or remove time on individual cylinders.

That is what I read and it makes sense. I did think about getting a new intake (Holley High Ram) but it has gone up about $350 since I first looked at it. Adjusting the computer is free...

 

[thunderchicken]

They are NGK 7 range. A little cold for NA but I think right for nitrous
The WOT plugs are just motor
I haven't looked into indexing the plugs

Timing is all controlled by the Holley and I can add or remove time on individual cylinders.

That is what I read and it makes sense. I did think about getting a new intake (Holley High Ram) but it has gone up about $350 since I first looked at it. Adjusting the computer is free...

I would think a 7 plug should be good for what you're running. IIRC, it's not a high compression combo.
Sounds like you certainly have good options for making adjustments to clean those plugs up.

Yeah a $350 price increase is pretty big. I agree computer adjustments are free.

 

[thunderchicken]

Well, I'm looking forward to tomorrow. I haven't heard the rumble of a big block singing at full song for just over a year now. But, tomorrow we're set for a Dyno session and should be bringing our engine home.

 

[jeffsqartan]

I've been fighting fouling spark plugs for a little while now and finally decided to figure out what was causing it. After some research I found that some people who run a Super Vic intake with a carburetor have lean issues on the 4 corner cylinders. When the same intake is used for EFI the 4 corner cylinders run rich.

View attachment 304852 View attachment 304853

I decided to do some individual cylinder fueling with the EFI. I added 10% more fuel to the inside 4 cylinders and allowed the computer to remove fuel across all cylinders. This picture is after a WOT pull with immediate shut down. The Right plug is a front cylinder and the left plug is a middle cylinder. Still a little rich but moving in the right direction.

View attachment 304854

These plugs are from the drive home after the WOT pull. They look much better than before but I decided to put an additional 5% more in the center for a total of 15% more. Loaded up 8 new plugs for racing Friday night if it doesn't rain.

View attachment 304855
View attachment 304856

Wow, I hadn't thought of the intake causing that. Glad you made some progress.

 

[femurphy77]

Started working on the front flares;



A couple of cans of Great Stuff. Cut it down to the general shape and then finalize it with bondo;



Once it's right I'll prime it and prep it for paint. When its ready for paint ill treat it with mold release and I'll build a mold of it then make the flares out of fiberglass and bond them to the car.