scottiedawg66
Well-known member
do u have stock valve springs? If so do u notice them floating at all?
~scott
~scott
'63 TurboFalcon....New 1/4 mile times!
- Thread starter Does10s
- Start date
Valve springs, retainers, keepers are all from Isky. They should be good until 6800rpm or so. We're going to switch to 4:11 gears in the rearend so she goes through the traps around 6000rpm.
My wife was driving and I was standing on the starting line but it didn't sound like it was having any valve float troubles. The only problem with the motor we had was after I cranked up the boost a little and leaned it out. It started to miss around 5200 after that. It ran that 13.41 at 10lbs. of boost. Bigger jets, manual valvebody and 12lbs. of boost and it'll be in the 12's!
Will
My wife was driving and I was standing on the starting line but it didn't sound like it was having any valve float troubles. The only problem with the motor we had was after I cranked up the boost a little and leaned it out. It started to miss around 5200 after that. It ran that 13.41 at 10lbs. of boost. Bigger jets, manual valvebody and 12lbs. of boost and it'll be in the 12's!
Will
A
Anonymous
Guest
Oh man, I forgot about you guys having to lift to shift into third! That has to be a few tenths just right there. You going to get a kit or a vlave body? I have a Transgo kit in my car now and it is great! Slams gears and boosted 2-3 shifts are great! Of course P/A makes a nice valve body for a little more money. BTW what are you guys running as far as 60's and 1/8 mile times?
Dan
Dan
Dan,
I don't remember the 1/8 mile numbers but the 60' was a 2.0 something with a best of 1.95 sec. If I recall the 13.41 pass had a 60' of 2.06. I'll have to check to make sure.
Yes I do have a manual valvebody to go into the C4. But I may just buy a transbrake valvebody to make it easier for my wife to hit a given launch RPM. We also need a two step. That way Kelly will put the car into the beams, push a button and floor it. When she sees ambers, release the button and drive! Right now she's having to do to much work to get the car staged, spooled, etc.
Later,
Will
I don't remember the 1/8 mile numbers but the 60' was a 2.0 something with a best of 1.95 sec. If I recall the 13.41 pass had a 60' of 2.06. I'll have to check to make sure.
Yes I do have a manual valvebody to go into the C4. But I may just buy a transbrake valvebody to make it easier for my wife to hit a given launch RPM. We also need a two step. That way Kelly will put the car into the beams, push a button and floor it. When she sees ambers, release the button and drive! Right now she's having to do to much work to get the car staged, spooled, etc.
Later,
Will
A
Anonymous
Guest
Transbrakes are good. 8) It should really go then! What valve body do you have for it now? I was thinking of changing to a reverse manual soon in my car. Why is it only running 1.9-2.0 60'? With the sticky tires, 4.56s and some boost I thought it would go some 1.6-1.7s easy(on a good track).
Dan
Dan
Dan,
Turbo cars almost always leave easy. Even with virtually no turbo lag it'll still take some time to build boost to get the 60' to be that low. If Kelly's car gets a 1.6sec. 60' then her ET would be around 11.90! We've got a long way to go to get to that kind of speed.
The valve body I currently have to go into the totally stock C4 is a forward, manual. I'm not sure the manufacture though. We'll probably end up with a transbrake.
Will
Turbo cars almost always leave easy. Even with virtually no turbo lag it'll still take some time to build boost to get the 60' to be that low. If Kelly's car gets a 1.6sec. 60' then her ET would be around 11.90! We've got a long way to go to get to that kind of speed.
The valve body I currently have to go into the totally stock C4 is a forward, manual. I'm not sure the manufacture though. We'll probably end up with a transbrake.
Will
6bangerwanab
Well-known member
so do you race a turbo car different than any other car? i always figured that would would need to spool the car at the line to get boost for the launch.
The only thing that's really different with racing a turbo car is trying to get the boost up when staged. A two step and a transbrake is the easiest and most consistant. But you can just foot brake it and that'll work fine too but you run the risk of rolling through the beams and you're launch RPM/boost might not be the same for each pass.
BTW....Kelly's Falcon is down again after we found the flexplate bolts had loosened up and the bolt holes had elongated themselves! So a new SFI flexplate is on order. Her reverse manual valvebody and two step are installed along with the newly Jet-hot coated turbo header and associated piping. Looks awesome!
We were going to race it next weekend at the PSCA race in Vegas but now we're just taking my '86 Mustang.
Later,
Will
BTW....Kelly's Falcon is down again after we found the flexplate bolts had loosened up and the bolt holes had elongated themselves! So a new SFI flexplate is on order. Her reverse manual valvebody and two step are installed along with the newly Jet-hot coated turbo header and associated piping. Looks awesome!
We were going to race it next weekend at the PSCA race in Vegas but now we're just taking my '86 Mustang.
Later,
Will
A
Anonymous
Guest
Does10s":niyiegve said:
a few questions what flexplate are you using? also what made you deside on a manual valve body? was it a vacume problem becuase of shifting? just wondering.
Mavrick Man,
We're now running a TCI flexplate. It's SFI certified and everything. I'm also going to Loctite the bolts so this won't happen again.
The manual valvebody is almost a necessity with a turbo. A C4 uses vacuum to shift into high gear. When you're floored with a turbo, there is 10lbs. of pressure. (If you're making 10lbs. of boost) So the tranny will not shift. Kelly was having to quickly lift when she saw the shift light to spike up the vacuum in the intake manifold to allow the tranny to shift. She found that this method worked best in all gears. So now with a manual V/B she'll be able to leave it floored and start grabbin' gears!
We'll have her car back up and running in a few weeks. I'll post the new ET results as soon as we get it back out to the track.
Later,
Will
We're now running a TCI flexplate. It's SFI certified and everything. I'm also going to Loctite the bolts so this won't happen again.
The manual valvebody is almost a necessity with a turbo. A C4 uses vacuum to shift into high gear. When you're floored with a turbo, there is 10lbs. of pressure. (If you're making 10lbs. of boost) So the tranny will not shift. Kelly was having to quickly lift when she saw the shift light to spike up the vacuum in the intake manifold to allow the tranny to shift. She found that this method worked best in all gears. So now with a manual V/B she'll be able to leave it floored and start grabbin' gears!
We'll have her car back up and running in a few weeks. I'll post the new ET results as soon as we get it back out to the track.
Later,
Will
