Mtuned

I bought fuel rail stock and did custom rails. Will try to get pics soon.

But it goes like this. Custom pickup tube from tank -10 line to aero a1000 pump, -10 to a Y fitting which goes to two -8 fittings into rails. rails go to fuel pressure regulator which then returns fuel through the Arizona speed fuel cooler and back into the tank!

I came up with this on my own and think it should work well, but we wont know until we push it more.

Can not wait to get external steering and go from there!

Mtuned

Thanks, and thank you everyone else for the compliments!

Mtuned

http://www.youtube.com/watch?v=NDBgSJwzIyE Check out the AEM fail safe guages i picked up.. Ill be using the fail safe out put to a relay to activate some sort of light or buzzer. With this feature and logging i think it will work out great

MILD THUNDER

iTrader: (3)

What heads are on it? 4.560 bore on a production 502 block or bowtie block?

Mtuned

Ported Irons, with A Nice Serdi Valve JOB

Also the block is a Gen 6 Block, Its what came with the boat. Machinist who deals with big blocks only said there was i had no worries.

cp5899

iTrader: (1)

From what I've read it's not common practice to go that big on a stock block in marine use. I'm assuming that's why joe was asking.

That aem gauge seemed like a nice setup.

What is your compression ratio?

How much boost did you see at 4000 rpms?

tpabayflyer

Thanks for sharing your build and engine combo......... It would be nice if more people did the same.... I will be sharing my NA502 specs when done....... Sounds like you are taking your time and getting the tune just right! Sounds mean!!! TBF

Mtuned

I was using a old boost gauge which read zero, it was from when boat sat for years. Im hoping to get out today and actually get some datalogs of RPM/Boost/AFR. Once i do i will gladly get them up here.

I had to go that big sadly as the previous machinist had done a number on the block. I know the guys over at MFRE, would of done what ever tested needed. After all the guy used to work for Boyd Racing Engines, and has built many 1500-2000HP Big blocks.

If it does eventually fail we will visit it then. But for now i'm going to enjoy it!

For testing today i'm installing the small S/C pulley first to get AFR's in check with FPR. Until i get back up to the shop to get Mefiburn. I reprogram ECU's for a living. First boat i'm messing with. Although I have done many Jetskis

Heres one i did on Motec

http://www.youtube.com/watch?v=wOrBR...FesQxlWesejBtQ

And this one to
http://www.youtube.com/watch?v=katb8ciucIg

SO I look forward to this!

Mtuned

Thank you! I appreciate all the comments And also appreciate everyone's suggestions! That's why we are all here! More so then power or anything else is safety! We all love this sport, and want to be able to keep doing it for many years.

MILD THUNDER

iTrader: (3)

What I meant by what heads, was what ''model''? Small oval ports, large oval ports, rectangle ports, etc.

Wasn't trying to pi$$ on your rainbow, I was just worried about 4.560 bore on a production 502 block that's been in a boat for many years, with 12psi of procharged boost going thru it. Ive split a cylinder wall before and It sucked. Filled the engine with water in seconds. Had I not caught it as quickly as I did, I woulda wiped everything out.

A buddy of mine built a 522CI like you have. With a M4 Procharger, edelbrock aluminum heads with mild porting, around 8.0:1 compression, hydraulic roller cam. Well over 1000HP. He's running Dart block, with a Lunati Blower crank, and oliver rods, JE Blower pistons with upgraded pins for the power level.

I'd imagine your somewhere in the neighborhood of 9:1 static with the flat top pistons?