| Author |
Message |
Dav Lee (Leedcc)
New member
Username: Leedcc
Post Number: 8
Registered: 9-2002
| | Posted on Monday, November 25, 2002 - 9:05 am: | |
Thanks for all the information, question is, woul d it be ok to leave it since it only affects warm starting ? |
Frank Bussi- Sottile (Caruso348)
New member
Username: Caruso348
Post Number: 16
Registered: 5-2002
| | Posted on Tuesday, November 19, 2002 - 5:18 pm: | |
When I replaced the clutch on my 91 348tb, the flywheel was sent out to machine shop to turn it
the way you'd do the rotors. There might be enough life left after they turn it. By the way, it is essential that they don't imbalance it by
gauging. If it's imbalanced you'll get a vibration
as was in my case at 1700rpm. Ferrari had to purchase and install new flywheel. That boo boo
cost the machine shop $3,200, just for the new flywheel. BTW, Dave, I had a similar post regarding 348 re-start problem. Consensus was a bad ground connection. I'm still investigating that aspect. |
JRV (Jrvall)
Junior Member
Username: Jrvall
Post Number: 138
Registered: 11-2002
| | Posted on Tuesday, November 19, 2002 - 11:11 am: | |
When the car is cold , and in the cold start mode, it recieves additional gas (runs rich)to start easy and warm up fast and smooth .
Also, I said the flywheel 'is one of' the more than one things that can cause hot starting problems. I've seen a few fuel press. regulators lay down on 348's, as well as other things. But the flywheel problem, with daul mass flywheels is pretty common. |
Mitch Alsup (Mitch_alsup)
Junior Member
Username: Mitch_alsup
Post Number: 223
Registered: 4-2002
| | Posted on Tuesday, November 19, 2002 - 10:41 am: | |
Probably there is still enough grease in the cold start condition to apply a useful amount of damping, but in the hot start case there is not enough damping. |
Dav Lee (Leedcc)
New member
Username: Leedcc
Post Number: 7
Registered: 9-2002
| | Posted on Tuesday, November 19, 2002 - 5:21 am: | |
Thanks for the valuable information. Please excuse my ignorance, if it is a problem with the fly wheel, how come it only affects starting "AFTER" the engine has been warmed up when starting the car "COLD" will also require the fly wheel?
|
JRV (Jrvall)
Junior Member
Username: Jrvall
Post Number: 133
Registered: 11-2002
| | Posted on Monday, November 18, 2002 - 11:25 pm: | |
The 'grease' (special silicone compound) is between the two sections of the flywheel as a dampening agent, to absorb shock loads in the drive line and absorb harmonic vibrations to prevent failure of the trans parts and dampen vibrations felt thru the chassis. It 'can' cause hard starting because of the vibration created (in the absence of the absorbing fluid) on the crank pulley end and the magnetic pick-up sensor.
|
Stanley DiGuiseppi (Standig)
Junior Member
Username: Standig
Post Number: 84
Registered: 5-2002
| | Posted on Monday, November 18, 2002 - 8:36 pm: | |
I don't get it? where is the grease and how does it affect the starting? |
Dave328GTB (Hardtop)
Member
Username: Hardtop
Post Number: 295
Registered: 1-2002
| | Posted on Monday, November 18, 2002 - 5:38 pm: | |
Flywheels can be rebuilt saving a couple of thousand. Check around.
Dave |
Reiner Kaiser (Reinerkaiser)
New member
Username: Reinerkaiser
Post Number: 33
Registered: 2-2001
| | Posted on Monday, November 18, 2002 - 11:07 am: | |
The flywheel on the 348 contains a certain
type of grease. If it leaks out, you will
have this problem. You can tell by a certain
chattering noise from the flywheel sometimes
when trying to warm-start. A friend of
mine had this problem and he opened it and refilled it with marine grease (to be find in marine stores such as west marine).
Cheaper than buying a new flywheel!!!!
You do need a special tool for the flywheel
nut. |
Matt Lemus (Mlemus)
Member
Username: Mlemus
Post Number: 579
Registered: 8-2002
| | Posted on Monday, November 18, 2002 - 8:25 am: | |
I'd say flywheel or starter. More like the flywheel. |
Dav Lee (Leedcc)
New member
Username: Leedcc
Post Number: 6
Registered: 9-2002
| | Posted on Monday, November 18, 2002 - 8:19 am: | |
My 91-348tb requires long / extra cranking (5 plus seconds)to start after the motor has been warmed up. This is especially evident when the car has ran some distance on the highway. The dealer said the fly wheel needs to be replaced...and implies parts+labour in excess of USD5K. Would anyone be able to offer some comments on the problem as well as the repair costs? Thanks |