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GET SOME!!Some changes for LemonWedge
- Thread starter LemonWedge
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GET SOME!!
LemonWedge
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Not that this thread needs to drag on forever, but I figured I’d update:
We didn’t learn anything last time out. The car wouldn't make a full pass due to fuel issues; it would massively flood itself when I mashed the throttle. We Pulled the needle & seat to find it clogged with rubber probably from the cell installation. Thought we had it figured out, but it continued to do the same thing. Pulled the entire carb apart all looked well, but the problem persisted nonetheless. I then put a regulator on it to make sure The mechanical pump wasn’t just blowing through it, fuel pressure steadied out some, but no changes in the problem.
So I drug the car home and did what any dedicated racer in a state of frustration would do: threw more cash at it. If you’ve followed this thread, you know there’s been no shortage of that this winter for me. Anyway, I’ve ordered a whole new, MUCH better thought out delivery system that includes an Aeromotive pump, billet regulator, return line, and dual filters - 100m pre and 10m post pump. The only thing left to consider in the carb is the power valves. Holleys got them front & back in my annular 1000 4150. Considering it’s flooding when the throttle is chopped open, it certainly could be something in that circuit. I’ll replace the front and plug & rejet the rear to simplify things. At that point, the whole system will be redone and should be able to handle considerable growth when called for.
I’ll report back when things become more clear.
We didn’t learn anything last time out. The car wouldn't make a full pass due to fuel issues; it would massively flood itself when I mashed the throttle. We Pulled the needle & seat to find it clogged with rubber probably from the cell installation. Thought we had it figured out, but it continued to do the same thing. Pulled the entire carb apart all looked well, but the problem persisted nonetheless. I then put a regulator on it to make sure The mechanical pump wasn’t just blowing through it, fuel pressure steadied out some, but no changes in the problem.
So I drug the car home and did what any dedicated racer in a state of frustration would do: threw more cash at it. If you’ve followed this thread, you know there’s been no shortage of that this winter for me. Anyway, I’ve ordered a whole new, MUCH better thought out delivery system that includes an Aeromotive pump, billet regulator, return line, and dual filters - 100m pre and 10m post pump. The only thing left to consider in the carb is the power valves. Holleys got them front & back in my annular 1000 4150. Considering it’s flooding when the throttle is chopped open, it certainly could be something in that circuit. I’ll replace the front and plug & rejet the rear to simplify things. At that point, the whole system will be redone and should be able to handle considerable growth when called for.
I’ll report back when things become more clear.
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66Satellite47
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A question, are you still running an electric fuel pump into a mechanical? I see no reason for that, but to each their own. It's worth trying the plugged power Simple jetting is a good thing.
LemonWedge
Well-Known Member
I had been, but the new system is a single Aeromotive electric pump.
LemonWedge
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Well, although I am yet to get the intake swapped over (existing RPM to an M1), I made some solid passes today and I think the changes are in the books. A few weeks ago I was handed a time slip that said 10.87. The incrementals just didn’t add up and I didn’t know what to think. Well, we saw some solid passes today and will chalk the 10 second time slip up to timing system error. With that said, the car went back to back new bests today @ 11.107 & 11.100. MPH was also a new best at 119.9 (knocking on the 120MPH door!!!). The short time on the slip was also a new best at 1.52.
thanks to all that have followed along with me this past off season here. It was a lot of work, but I’m happy with the results.
thanks to all that have followed along with me this past off season here. It was a lot of work, but I’m happy with the results.
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Fizz66Coronet
Well-Known Member
If you go with the M1 is there going to be hood clearance issues?
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Good news all around. Your 10 second time slips are going to become a common thing. You’re going to chisel those 60’ times down lots and you’re already into 10 second ET’s with your speed. Thanks for the update LW, it’s been interesting to follow your off-season updates and progress.
LemonWedge
Well-Known Member
The RPM is taller than the M1. My hope is it will leave a little more room above the carb to help with intake flow.
LemonWedge
Well-Known Member
Its a Lupo / Dynamic 9-1/2”.
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Perhaps your consistent 10 second time slips are only one 8” converter away.
LemonWedge
Well-Known Member
If and when I ever do a refresh on the bullet, I would go with more camshaft and at the very least have my converter loosened up a bit. I’d probably at that time just send it back to Dynamic and have them adjust it for the combo update.
Tex013
Well-Known Member
i doubt it , depending on stall . Really just some more HP .
Lemonwedge my Dynamic 9 1/2 (footbrake) is back in my car at the moment . It was 4800 behind my 440 , 5000 behind my first 505 . The 440 went as fast as 10.80s but sat in mid high 10.90s . It took me a while to get car to go from 11.0s to finally drop a [email protected] then seemed happy to go there regularly .
The Dynamic behind my current max wedge 505 went [email protected] 10 days ago leaving @ 1500 with a 1.49 sixty .
I cant give exact numbers against my 8" as that is transbrake and leaves @ 4500 . But i am giving up half to 3/4s of a tenth in the sixty . That converter has gone 10.27/[email protected]
I do know my sixties are a bit soft off the brake as best is a 1.42 and average 1.44
These numbers are with same motor and 29.5x10.5 Pro Bracket Radials , so exact same car package . I ran the 10.25 on 28" PBR
Tex
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My best time was a 10.39 with my 9.5” Dynamic. I changed to an 8” converter and installed a low gear set and went 10 teens, no motor changes. That was with the cal tracs, spilt monos with the 4.10’s. Ladder bars kicked the car into the 9.90’s.
LemonWedge
Well-Known Member
I’ve considered a low-gear set for my 727. My theory is that a heavy, relatively low powered car may be the right place for that modification. Pretty spendy, but it could be right for my combo (??).
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The low gear set would get you out there quicker, there’s no doubt about that. My car with the low gear set made the car act like 4.56’s in 1st, 4.30’s in 2nd, and 4.10 in 3rd.
66Satellite47
Well-Known Member
I never quite convinced myself that the low gear planetary was right for me. But with the right suspension setup & rear gear combo it would get the car moving quicker.
LW, it sounds like your car is about 3700#, which is fairly heavy. That's an expensive mod but maybe good.
I just spent the extra money to do a bigger motor. 10.51 with no carb tuning and a suspension that needs a lot of tuning, 1.41 60'. My Satellite is also about 3700#. I got tuning work to do.
LW, it sounds like your car is about 3700#, which is fairly heavy. That's an expensive mod but maybe good.
I just spent the extra money to do a bigger motor. 10.51 with no carb tuning and a suspension that needs a lot of tuning, 1.41 60'. My Satellite is also about 3700#. I got tuning work to do.
PRHeads
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10’s??
I vote for more power.
Looks like you need to find a couple mph worth.
I vote for more power.
Looks like you need to find a couple mph worth.
66Satellite47
Well-Known Member
LW, I've lost track of your current motor combination. The Lupo 9 1/2" should be great for a fairly heavy car. Power is in the heads and camshaft combination. I kept porting my iron 906 & 915 heads and got more performance, combined with good cams. My best cam is still an antique mushroom cam. 6.35/645 lift & 276/[email protected]. As good as the Comp .660/280 roller. Combination of heads and camshafts is a key if you have the good torque converter. Keep going!
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