Definately had better weekends at the track

[B3422w5]

Head out for first outing of the year.
Idling back to pits after going through tech, all the sudden hear a wierd noise, look at oil pressure, it hasn’t moved at all.
Whap the throttle in second gear, noise seems to go away, and car feels fine until rpm’s are lower then noise is evident.
In other words, stand on it, nothing seems amiss.
Go back to the pits scratching my head. Guy pitted on one side of me is standing there, with a top sportsman car.
I asked him what this sounded like to him, he said loose convertor bolt.
Let it cool off, take a ride in golf cart, fellow local racer stops me, we chat, he says bring the car down here, I have a lift in my double stacker, we will winch it in and lift it up.
Converters bolts are fine, hanger for driver muffler was loose, didn’t see anything else. Nobody really had any ideas.
Go back to pits, let the car sit, go up to watch for a while. Come back, start car up cold, sounds perfectly normal. Let it warm up for a while, here comes that noise back. I am convinced it’s exhaust related.
Time trial Sat morning, I am expecting a low 6.50, 1500 foot of air( or better maybe with “ timing” issue “ resolved”
Anyhow, runs 6.77 at 101. It’s off a good bit. Kinda seems like it’s chugging, light miss.
Put a 77 on it for first round( had zero clue what it would run) it runs 6.95@98 mph. Ouch. Needless to say I was dead meat.
Anyhow, will pop the valve covers off and pray… then the oil filter and I will invest in a hacksaw, see what’s what.
Guess that’s racing. Grandkids had a blast, nice show, great promod racing, among other stuff.
Off to church, car is still needing to be unloaded, along with golf cart
Was hoping for no issues, that wasn’t the case. She still broke

 

[Mr. Sinister]

Sorry to hear about your misfortune. Do you know what is wounded yet?

 

[B3422w5]

Sorry to hear about your misfortune. Do you know what is wounded yet?

No idea, just got home from church. Didn’t leave track till 1:30 last night.
Still have to unload everything yet.

 

[440outlawdart]

sounds like my dart and a100.i can win for losing.pulled the dart motor almost 2 months ago.had a hydraulic came with bad lifters.put a 525 lift roller in it with aluminum.heads runs worst now.tokk a week vaca to do that.a100 brought a motor off the market place.and its junk.so not sure now what im doing with them and drive them on the street or race them

 

[ValiantS]

Head out for first outing of the year.
Idling back to pits after going through tech, all the sudden hear a wierd noise, look at oil pressure, it hasn’t moved at all.
Whap the throttle in second gear, noise seems to go away, and car feels fine until rpm’s are lower then noise is evident.
In other words, stand on it, nothing seems amiss.
Go back to the pits scratching my head. Guy pitted on one side of me is standing there, with a top sportsman car.
I asked him what this sounded like to him, he said loose convertor bolt.
Let it cool off, take a ride in golf cart, fellow local racer stops me, we chat, he says bring the car down here, I have a lift in my double stacker, we will winch it in and lift it up.
Converters bolts are fine, hanger for driver muffler was loose, didn’t see anything else. Nobody really had any ideas.
Go back to pits, let the car sit, go up to watch for a while. Come back, start car up cold, sounds perfectly normal. Let it warm up for a while, here comes that noise back. I am convinced it’s exhaust related.
Time trial Sat morning, I am expecting a low 6.50, 1500 foot of air( or better maybe with “ timing” issue “ resolved”
Anyhow, runs 6.77 at 101. It’s off a good bit. Kinda seems like it’s chugging, light miss.
Put a 77 on it for first round( had zero clue what it would run) it runs 6.95@98 mph. Ouch. Needless to say I was dead meat.
Anyhow, will pop the valve covers off and pray… then the oil filter and I will invest in a hacksaw, see what’s what.
Guess that’s racing. Grandkids had a blast, nice show, great promod racing, among other stuff.
Off to church, car is still needing to be unloaded, along with golf cart
Was hoping for no issues, that wasn’t the case. She still broke

Just look things over well and likely something stupid will turn up. Could be ANYTHING unfortunitly. Bad plug, wire, lash issue, pull the dist cap, etc one thing at a time.

 

[71Demon540]

Head out for first outing of the year.
Idling back to pits after going through tech, all the sudden hear a wierd noise, look at oil pressure, it hasn’t moved at all.
Whap the throttle in second gear, noise seems to go away, and car feels fine until rpm’s are lower then noise is evident.
In other words, stand on it, nothing seems amiss.
Go back to the pits scratching my head. Guy pitted on one side of me is standing there, with a top sportsman car.
I asked him what this sounded like to him, he said loose convertor bolt.
Let it cool off, take a ride in golf cart, fellow local racer stops me, we chat, he says bring the car down here, I have a lift in my double stacker, we will winch it in and lift it up.
Converters bolts are fine, hanger for driver muffler was loose, didn’t see anything else. Nobody really had any ideas.
Go back to pits, let the car sit, go up to watch for a while. Come back, start car up cold, sounds perfectly normal. Let it warm up for a while, here comes that noise back. I am convinced it’s exhaust related.
Time trial Sat morning, I am expecting a low 6.50, 1500 foot of air( or better maybe with “ timing” issue “ resolved”
Anyhow, runs 6.77 at 101. It’s off a good bit. Kinda seems like it’s chugging, light miss.
Put a 77 on it for first round( had zero clue what it would run) it runs 6.95@98 mph. Ouch. Needless to say I was dead meat.
Anyhow, will pop the valve covers off and pray… then the oil filter and I will invest in a hacksaw, see what’s what.
Guess that’s racing. Grandkids had a blast, nice show, great promod racing, among other stuff.
Off to church, car is still needing to be unloaded, along with golf cart
Was hoping for no issues, that wasn’t the case. She still broke

Sorry to hear this. I am sure you will find the problem. Keep us updated.

 

[skrews]

Try running a leakdown test on it if possible.

 

[B3422w5]

Try running a leakdown test on it if possible.

Think somehow goofed up on the timing and its actually sparking knocking going down the track, from having right at 40 degrees in it( if what I am thinking is correct)
The noise I am not sure about. Been so hot haven’t went out in the garage to mess with it yet

 

[jeff alder]

Think somehow goofed up on the timing and its actually sparking knocking going down the track, from having right at 40 degrees in it( if what I am thinking is correct)
The noise I am not sure about. Been so hot haven’t went out in the garage to mess with it yet

This heat is ridiculous and you are even further north than us. Our electric bill has damn near doubled from last year. That's really cool your fellow racers help out with tech information and especially the guy with the lift. Hope you find the issue... STAY COOL up there in Portage.

 

[B3422w5]

Found very loose lash on a couple of rockers. That was the noise. It’s gone.
Question now is if the cam is OK. Gonna street drive it here in the next couple of days. If it passes that test, plan to test and tune on Friday night the 29th at 131.
Turned timing back 5 degrees, will experiment with that at the track if I get to that point and lash stays good.

 

[PRH]

Cross your fingers that someone just screwed up setting the lash.

 

[B3422w5]

Cross your fingers that someone just screwed up setting the lash.

Yea, we double checked everything, but you never know. Hope I get lucky

 

[71Demon540]

Yea, we double checked everything, but you never know. Hope I get lucky

Sure hope you get lucky with the lash and it was a fluke.

 

[B3422w5]

Lash seems fine now. Took it out and tried it, still struggling under a load. Nail it in high gear going about 30 and it struggles to accelerate, missing.
Cruising it seems fine.
Just did a compression test little bit ago( cold) all the cylinders were between 140-150. I thought this was low. Called Jack at Valley performance, he said that’s fine, wouldn’t be of concern.Cam is likely bleeding off some compression.
I ordered new wires, be here tomorrow. But before I swap them on, gonna take carb off and give it a good look over and clean it up. I did swap to a better fuel pump, maybe something went through and into the carb. If neither of those things fix it… don’t know.

Question.. what is the proper clearance for the pickup on my MSD distributor supposed to be. Tried to clean it up( rust) while motor was apart..maybe I moved something?

 

[PRH]

all the cylinders were between 140-150.

Sounds a bit low to me as well.
That being said, I’ve seen the gauges vary some too.

What’s the compression ratio supposed to be?

 

[B3422w5]

Sounds a bit low to me as well.
That being said, I’ve seen the gauges vary some too.

What’s the compression ratio supposed to be?

12.3
Yea, I screwed the threads in till it seemed seated. This has the 14mm threads, then the 18mm threads on it. So it stops when it gets to the 18

 

[PRH]

According to Wallace, 150 is way low for that.
Like “the cam is off a tooth” low.

416”?

 

[B3422w5]

According to Wallace, 150 is way low for that.
Like “the cam is off a tooth” low.

416”?

Yes, 418
I do currently have the timing set at 30, was gonna try that, so it’s likely 4 or 5 degrees retarded. Have to borrow a light and bump it up.

 

[PRH]

Ignition timing won’t affect cranking pressure.

Wallace shows 200 for the cam in at 102, and 167 for the cam a tooth retarded (116).
That’s with an observed baro pressure of 29.5, which might be a tad high depending on your elevation.
140-150 is way low.
I’d see about borrowing another gauge before I got too carried away.

 

[B3422w5]

Ignition timing won’t affect cranking pressure.

Wallace shows 200 for the cam in at 102, and 167 for the cam a tooth retarded (116).
That’s with an observed baro pressure of 29.5, which might be a tad high depending on your elevation.
140-150 is way low.
I’d see about borrowing another gauge before I got too carried away.

Yea, got to think the cam timing would effect it, not ignition timing…duh..lol
Btw, I did not hold the throttle open, should I ?

 

[PRH]

Always wot, and I put the battery charger on.
Then check at 4 pumps, and maxed out(7-8 pumps).
Something that maxes out around 200, will often show about 100 on the first pump.

Dropping the baro to 29.0 only changed the numbers about 3psi.

 

[skrews]

Take out all the spark plugs too.

 

[B3422w5]

Take out all the spark plugs too.

Had them all out.
Going to grab another tester this morning per Dwayne. If it yields the same results, my season is over before it really ever got started. Cam will need re degreed, likely it’s not in right, thus the low readings

 

[ValiantS]

Had them all out.
Going to grab another tester this morning per Dwayne. If it yields the same results, my season is over before it really ever got started. Cam will need re degreed, likely it’s not in right, thus the low readings

After first reading the low cranking compression, this was the first thought on my mind. Especially since it wasn't running like expected.

 

[Newbomb Turk]

Had them all out.
Going to grab another tester this morning per Dwayne. If it yields the same results, my season is over before it really ever got started. Cam will need re degreed, likely it’s not in right, thus the low readings

Pull the valve cover off and roll the engine over to TDC on overlap.

Look at the valves. That will tell you if you are that fucked up on cam timing.

If both valves are off the seat the same the cam is straight up, or the overlap triangle is centered where it should be.

If the intake is off the seat more the cam is advanced.

If the exhaust is off the seat more the cam is retarded.

You won’t know exactly how advanced or retarded the cam may be but you’ll be able to see if the cam is way wrong.