- Location
- Grand Rapids, MI
Edges of the orings look like you put them in a frying pan......
DASA 1200 burning up orings
- Thread starter tipafew
- Start date
DylanS
Gorilla Smasher
- Location
- Lebanon Pa
Not sure, just a thought. Figured maybe vibration smashing them and blowing compression past them could maybe do it? Just spitballing
- Location
- Texas
What type of Elastomer are the O-Rings? Are they Viton or Harbor Freight Rubber?
Viton has the higher temperature rating of 390 F versus lower Nitrile and Buna-N...
And what is the Squish on that Cylinder/Dome setup?
Viton has the higher temperature rating of 390 F versus lower Nitrile and Buna-N...
And what is the Squish on that Cylinder/Dome setup?
- Location
- Grand Rapids, MI
Okay. Sounds like another vote for checking the head/deck. I will do that.
Currently the cooling is set up flowing from bottom to top. 4 lines feeding the sides of the cylinder, one feeding the manifold, and 4 coming out of the head. From what I have seen it seems like this is the way that most people are running it. I didn't set it up originally but I think the guy knew what he was doing........
- Location
- Grand Rapids, MI
Hey man, it's been a long time!!
I don't know for sure but they came from a reputable shop.
I ended up putting a new top end in it for him this winter. I checked the squish at that time but can't remember what it is. It was pretty conservative from what I remember.
hornedogg79
dodgin' bass boats
Used to burn up orings in my xscream 900. I used stretched out ada orings in a pinch once and they lasted much longer. They were slightly thicker. Running water straight to the head helped tremendously. Every xscream pro flatwater ski I've seen was done this way. Also switching to a programmable ignition helped cool mine down a bit. I had a msd enhancer with stator advanced 4* before. Too much timing on top end will cause things to get hot quick.
- Location
- Grand Rapids, MI
What should static timing be set at with just an enhancer? Anybody know ??
- Location
- Grand Rapids, MI
There are no timing marks on these cases so I’m going to check how the original builder set it.
DylanS
Gorilla Smasher
- Location
- Lebanon Pa
I run my 1200 at 27* with a total loss curve, im not sure what an enhancer curve looks like but I believe @OCD Solutions might’ve had a chart with the curve on it at some point. I was digging thru the search bar and can’t find the post anymore.
OCD Solutions
Original, Clean and Dependable Solutions
- Location
- Rentz, GA
The file name says stock vs MSD but I forget which one is which.
DylanS
Gorilla Smasher
- Location
- Lebanon Pa
Blue should be the enhancer curve ^
I did a bunch of timing work on my Dasa and found on my gen 2 billet cases the machined radius the stator sits on is TDC. I believe it was the upper one, #1 in photo, but can’t exactly remember. The stator could only lined up with one of the radiuses as I remember it.
Attachments
- Location
- Grand Rapids, MI
Thanks for all the input
Last edited:
DylanS
Gorilla Smasher
- Location
- Lebanon Pa
was it kicking back when cranking it over? Not sure how much the enhancers pull timing back for starting but with timing that advanced it would be carrying on like crazy when cranking over