Parallel Cooling Header Pipe Screw settings NYNJA Pipe

[Batteryman]

Can anyone tell me what would be a good starting point for the 3 header pipe screws when running a Parallel setup? I ask as on the blaster it looks like I have to remove everything to get to the bottom adjustment. Current water temps here are 57 degrees, in August we barely hit 71, this is a rec ski and I plan to do a few races. one being on a smaller pond.

I have what I believe to be a NYNJA pipe, while not as good and not the same as a TNT its similar I think. I read that Tim recommends running parallel cooling as with the water being cooler it requires less water in the pipe. His recommendation is the pipe runs best in race world hot and it needs to steam but not sizzle. Jr. just opened up my manifold from 42mm to I believe 48mm. I plan to put a T on the top outlet of the header pipe with one going overboard and the other going to the stinger with a 3mm restrictor.

 

[Batteryman]

I finally got everything installed. Parallel cooling with both cylinders tapped on the FP manifold is so much more tubing than a standard FP single cooling line setup. I started with installing the header pipe with only the lower screw 1/4 out. Thanks to Jr. for the bore/hone and new pistons. The complete rebuild and 62t upgrade came out looking great. The cases were sand blasted, primered, painted with some Tropical Glitz metallic silver and topped with some glamour gloss 2k clear. Head was also re anodized after being heavily custom faded. I am still trying to get it to run right (very much a novice at tuning). I did my best to get the carbs synced before install but this gauge turned out to be quite handy and made it idle much better after adjusting. One carb was pulling 10 and the other 20 kg/h.


For those looking to switch their blaster over to 62t I found it was required to move the fuel filter to where its mounted on the 96 blaster and also heat up and bend the rear air intake tube.

 

[fastgtfairlane]

I have a similar setup and run a dedicated line to the headpipe for cooler water to the headpipe. I believe my screw settings are at 1/4 turn out on the top screw and 1/4 turn on the mid screw. On my setup, I have 2 -1/2 od lines from the pump to a manifold with 4- 3/8 outlets. 2 feed the engine, 1 feeds the headpipe alone and the last feeds the stinger.

 

[Batteryman]

Thanks Fastgtfairlane!
That is close to how mine is plumbed. I ended up taking the ski out for 5 min doing some 20% blips. dint really get on it and the head pipe was stone cold so I still need to see how it goes. pipe was a little warm.

There was 2 and a half foot swells out on the river and being by myself with only a small paddle I got a bit worried on a new engine not consistently idling.