http://www.lgmotorsports.com/shop/pr...203cfaa39f08aa

i was thumbing through some parts and i came across this and was wondering if it is any good and does what it says.

 

Anybody?

 

For $600, I think I'd rather use the Delteq to take a lot of the load off the opti. Or better yet the Delteq 2, to completely eliminate the opti...

 

Dynaspark has been talked about alot on this board do a search on it and you can see what others have to say. You will also find some people that actually have bought it and gave their review on it.

 

Got it, love it, fixed the issue I was having when the Delteq was still in development. It's just a very well developed optispark with nice parts.

 

SS MPSTR

did you mesure all the spec as per the instructions? did they mesure up fine or did you have to mod anything?

 

I double checked everything and nothing required modification on my car.

 

how did you check every thing. I ask because i just purchased one my car had been eating optis every 3000-5000 miles.

camshaft end play: .004-.012
I plan on measuring this by pushing the cam back then setting a dial indicator and prying it foward with a small pry bar between the block and cam gear. with this give me a true reading? also if it is out of spec how can i correct it?

camshaft gear thickness: .235 max
my question on this if it is over .235 how do i resolve this. would i have to take it to a machine shop and have it milled?

camshaft gear mounting bolt head installed height: .200 max
not even sure i know what this is i assume it is the from the top of the cam bolt to the face of the gear. again would i have to find new bolts if this is to tall?

camshaft pilot hole depth: .360 min.
would i have to drill this if iw was not in spec? how does this effect anything.

camshaft pilot hole I.D.: .515 min .525 max
same thing would i have to re drill this if it is to small and if it is too big how would i resolve this?

installed stacked pilot hole depth (as measured with cam gear installed on cam) .590 min
what is this?

camshaft gear pilot hole I.D. .515 min .525 max
again how do you corret too big of a hole?

camshaft mounting bolt O.D. (hex corner to hex cornet) .560 max
fix i guess would be new bolts.

drive dowel height (from cam face) .605 max
is shows no min. so guess i can grind this to spec

drive dowel height (with cam gear installed) .375 max

drive dowel O.D.: .250 max
what is the fix replace dowel pin?

 

You will find that most of the criteria is already correct, and if you're building the engine, the rest is relatively easy. I had the folks who built my 383 check the cam, endplay, dowel, cam gear, etc. I remember now that the only 'real' issue we found was that the dowel was a little long, which was cut down to spec in about 1 minute.

As far as how to correct a lot of these issues (should you find them), I would call Phil at Dynatech.

 

I found my dowel pin to be huge it is .593 from the cam gear. i figure that is what my major problem was.

 

After two gm opti-sparks, I purchased dyna-tech. The copper contact was corroded. So I took it apart. The best thing about it is the NC machined case. It uses the same bearing as stock. The same rotor with a rivet to hold the copper contact. Thats about it for $600. It is sealed good. Now I am building my own. Rotor, bigger bearing.

 

mzgp5x

did your dynaspark fail? of just your gm opti's

 

The dyna spark had a big gob of green goo on the copper contact. It was probably a month old. Also, I had two gm opti's go bad. The rotor is the problem, or, I am to modified. The easy way is to fix a gm opti... take it apart and drill out the front. and rivet the copper contact. It will save you money. Not $600 It will be just as good. Now I machine my own rotor from 6061t6 alum with a delrin mount. Will not break. The gm plastic rotor sucks.

 

MZGPX : If it is not an inconvenience could you explain how to make a rotor? I live down in Mexico and my Vette is not moving. The rotor exploded from high acceleration, and the opti had 200 miles on it. Parts are almost imposible to get here and prices are at least twice what you pay in the USA. An opti can cost about $950 US dlls and if GM installs it they will charge about $1300 US dlls. It is too much, it's a great car but by no means a Ferrari or some other highly exotic car.
Can you give me some advise, I have access to a lathe so I could build one with some instructions.
How many rpms can your rotor withstand.

Thank you

 

mzgp5x

got any pics