LS swapping my LS - L92/LS3 into C5
10-09-2018, 07:41 AM
#122
When I originally built the engine, I installed 7.400" pushrods from BTR. I was targeting a preload of .050", and it took 11 turns with the pushrod checker to get to zero lash.
(11 turns *.050" per turn) + 6.8" base length of checker + .050" preload = Pushrod length
(.550")+6.8"+.050"=7.400 exactly.
The engine has run perfectly with this setup but I do have a very slight sewing machine noise from the valvetrain that bothers my OCD... I originally thought it was due to the beastly .660 BTR dual springs, but in doing some homework on the interwebs it looks like a value of more like .070"-.090" is needed to keep LS7 lifters happy due to the greater plunger travel. The next available size is 7.425", which increases my preload from .050" to .075". Pushrods are on the way, I plan on doing a before/after video once they're installed.
(11 turns *.050" per turn) + 6.8" base length of checker + .050" preload = Pushrod length
(.550")+6.8"+.050"=7.400 exactly.
The engine has run perfectly with this setup but I do have a very slight sewing machine noise from the valvetrain that bothers my OCD... I originally thought it was due to the beastly .660 BTR dual springs, but in doing some homework on the interwebs it looks like a value of more like .070"-.090" is needed to keep LS7 lifters happy due to the greater plunger travel. The next available size is 7.425", which increases my preload from .050" to .075". Pushrods are on the way, I plan on doing a before/after video once they're installed.
10-09-2018, 11:05 AM
#123
TECH Senior Member
Dual springs WILL make a little more noise than singles. Inner and outer rubbing....
10-23-2019, 09:57 AM
#124
Been a long time since I updated.
While doing some no-lift shifts, the resulting backfire blew out one of the baffles in the base mufflers on the car and it was rattling around (not the first time this has happened!).
So, the solution was to remove all restrictions. Chopped off the stock mufflers, welded up extensions and tips, shot it with high temp black. Party time!
Out for a couple last rips this season. Trying to avoid putting it away in storage as long as possible
Finished up installing all new LED lights in the garage. The output is incredible, and no more annoying fluorescent flickering/constant bulb changes.
https://youtu.be/w7CZddnSbVg
While doing some no-lift shifts, the resulting backfire blew out one of the baffles in the base mufflers on the car and it was rattling around (not the first time this has happened!).
So, the solution was to remove all restrictions. Chopped off the stock mufflers, welded up extensions and tips, shot it with high temp black. Party time!
Out for a couple last rips this season. Trying to avoid putting it away in storage as long as possible
Finished up installing all new LED lights in the garage. The output is incredible, and no more annoying fluorescent flickering/constant bulb changes.
https://youtu.be/w7CZddnSbVg
Last edited by LQ4-E39; 10-24-2019 at 07:17 AM.
10-23-2019, 11:21 AM
#125
IS anyone else having problems with the pics not showing up?
10-28-2019, 01:00 PM
#127
TECH Fanatic
iTrader: (27)
Love the car man. Glad it's up running good for you. Did you ever solve that P0332 code? I have the same one on my car and I'm curious what you did to fix it.You mentioned a pinched wire, and I was thinking that may be my problem too.
12-16-2019, 11:57 AM
#131
I pulled the trigger on an inexpensive ITB system knowing it would need fabrication and "fixing", but since I have to change a lot of things to make it work with my setup, that's not really a problem.
Here is what I'm thinking of doing in terms of actuation - using the OEM TB as a servo to control the ITBs. (Not my video)
So far the machining on the manifold castings is crappy as expected and they need work. More details to come.
Here is what I'm thinking of doing in terms of actuation - using the OEM TB as a servo to control the ITBs. (Not my video)
So far the machining on the manifold castings is crappy as expected and they need work. More details to come.
12-16-2019, 12:03 PM
#132
TECH Senior Member
iTrader: (7)
Man...watched the video. I wouldn't trust that setup at all. They have it setup so that motor is now opening 8 throttle bodies instead of one. On top of that, the motor is not rotating a single shaft, but is actuating a complicated series of rods and heim joints. No way I would run that.
Andrew
Andrew
12-16-2019, 01:47 PM
#133
TECH Senior Member
Man...watched the video. I wouldn't trust that setup at all. They have it setup so that motor is now opening 8 throttle bodies instead of one. On top of that, the motor is not rotating a single shaft, but is actuating a complicated series of rods and heim joints. No way I would run that.
Andrew
Andrew
All it had to do before was open a throttle blade. NOW it has to open 8 of them along with attendant return spring tension to overcome.
04-25-2020, 07:15 PM
#135
The car is for sale!
With a heavy heart, I've decided to sell her. With a baby on the way, I won't be able to enjoy the car the way it deserves to be driven.
https://ls1tech.com/forums/market/1935637
With a heavy heart, I've decided to sell her. With a baby on the way, I won't be able to enjoy the car the way it deserves to be driven.
https://ls1tech.com/forums/market/1935637