Bad dyna spark?
Thread Starter
Instructor
Joined: Jan 2003
Posts: 129
Likes: 0
From: Ontario ca
Bad dyna spark?
Ok so I just got my gen 1 dynaspark and all looks well but I noticed that the input shaft has some play in it, and wiggles from side to side, im not pushing hard on it or anything like that. Just thought I would ask you guys and see if you noticed the same with your dynasparks. I just dont want to install the thing only to have it tear itself apart from the inside out. I will measure the play when i get to work tomorrow and I already emailed dynaspark to find out the acceptable amount of input shaft play. In the mean time I was wondering if anyone has had there rotor rub on the inside of the cap due to excesive bearing play?
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
They have play in the shaft as do all Optis do.They provide a list of measurements to do before install so check those out. I believe you can pull the shaft out completly as you can with a GEN I OEM opti.I wouldn't worry about it.I have never heard of a proprly installed Dynaspark failing yet.Mine is going on 2 yrs and runs fine.The worst mistake you can make it to route the vacuum lines in reverse or in correctly.That will cause a vacuum inside that will damage the rotor
Last edited by Redeasysport; Jun 28, 2006 at 01:41 AM.
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
I'm not sure about the early Opti-Spark, but the vacuum vented Opti-Spark relies on the camshaft to support the rear of the Opti-Spark shaft.
The Opti-Spark shaft is supported at the front by the internal ball bearing. That same shaft is inserted into the camshaft center hole and also has two small O-rings to take up the play -- this is the rear support for the Opti-Spark.
The combination of the support of bearing at the front and the camshaft at the rear makes the Opti-Spark shaft fairly rigid when installed.
This is the reason you should always install new O-rings on the Opti-Spark shaft -- better support.
I've wondered if any Opti bearing failures were due to no, or defective, O-rings at the rear allowing the shaft to "whip."
Tom Piper
The Opti-Spark shaft is supported at the front by the internal ball bearing. That same shaft is inserted into the camshaft center hole and also has two small O-rings to take up the play -- this is the rear support for the Opti-Spark.
The combination of the support of bearing at the front and the camshaft at the rear makes the Opti-Spark shaft fairly rigid when installed.
This is the reason you should always install new O-rings on the Opti-Spark shaft -- better support.
I've wondered if any Opti bearing failures were due to no, or defective, O-rings at the rear allowing the shaft to "whip."
Tom Piper
Drifting
Joined: Sep 2003
Posts: 1,483
Likes: 4
From: middle TN
There was zero play in the shaft of my Gen I dynaspark which I just installed over the weekend. If i'm not mistaken, most all the measurement specs on the dyna instruction sheet pertain to Gen II, and/or modified engines.
The water pump shaft needs two o-rings (one for engine spline and one for w/p spline), but there wasn't one on my dyna, nor do I remember mention of one in the instructions. Also, no o-rings included in the dyna package, so I dunno. Installed mine without o-rings, it's running great.
The water pump shaft needs two o-rings (one for engine spline and one for w/p spline), but there wasn't one on my dyna, nor do I remember mention of one in the instructions. Also, no o-rings included in the dyna package, so I dunno. Installed mine without o-rings, it's running great.
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
Originally Posted by Scooter 94
The water pump shaft needs two o-rings (one for engine spline and one for w/p spline), but there wasn't one on my dyna, nor do I remember mention of one in the instructions. Also, no o-rings included in the dyna package, so I dunno. Installed mine without o-rings, it's running great.
Tom Piper
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
Originally Posted by Tom Piper
I'm not sure about the early Opti-Spark, but the vacuum vented Opti-Spark relies on the camshaft to support the rear of the Opti-Spark shaft.Tom Piper
