tomcat

My point is that port injection, and intercoolers of appropriate size for the job, are a more conservative approach to the design of a supercharging system. I know that doesn't help you because you are sellling screw compressors, and the nature of that beast led you to a throttle body injected design, with intercooler size limited by the size of the manifold and the need to stay under the hatch. Our design is not going to fit under some hatches but that's the compromise we chose.

Conservative design definitely leaves more room for safety and reliabilty and all the comments about cylinder pressure sensors and intercoolers the size of Ceasar's Palace, Maine etc. won't change that fact. If cylinder pressure sensors help you diagnose failures and improve your designs, that's great, you do what you have to do. But if you are trying to say that port injection and big intercoolers are bad that's a bit like saying white is black.

I understand that you release some water at the back of the heads on your system. That's fine if that's what you have to do, but I don't see everybody else doing that on their systems, or having these types of failures as a result.

The last two intercooler designs we did are available in both aluminum and cupronickel. Customer's choice and it's a price issue. They aren't necessary for many guys on fresh water. To say that they are more reliable because they melt at higher temperature is a bit of a stretch.

If the screw compressor reaches a pressure ratio of 1.35 within the rotors then you know that the air has been heated. The condensation on the case means that heat was removed by the evaporation of fuel. This does not mean that a screw compressor is some kind of refrigeration system. The cooling effect of fuel evaporation is available to all engines; it just happens later with port injection.

It is the nature of selling to emphasize your unique features and turn minuses into pluses, and I expect no less from you. I will confess to doing it myself when discussing low speed boost levels on a centrifugal blower. I tell my potential customers that it will put less stress on the drive, but a few still manage break their drives.

fountain333

hey strip did you flow those cylinder heads ??

Strip Poker 388

Fountain333 yea look back in the post . I am cleaning them up now .I am not doing much to the stock cast iron heads ,There is not much reason to move much metal. I did the bowls and a little in the combustion chambers,very little in the intake runners . I polished the combustion chambers and the exhaust runners just for it to carbon up as soon as I crank it up , But its Petty The Whipples will make up for the heads I will measure the runners cc with a Bret tube then re flow them to see where were at on them . I don't expect much, but it cant hurt.Its just stock Chevy heads


Mark at Precision Marine has a new valve seat cuter for the exhaust that he has come up with that has 2 angles and 3 radius's that improve the flow over a standard Serdi valve job.

Put it this way, SERDI did not even know about the seat cutter

Rob

X-Rated30

Pardon me for asking, Rob, but is that a copy of Hustler on your bench in pic 3 of post #130? No wonder your engines aren't finished yet!!! Do you EVER take a day off from the porn?!?

BTW -- Goin to Mardi Gras?

cougarman

I was thinking the same thing, And the posters in the background.

I can see your incentive for rubbing and polishing and rubbing........................................... ...!!

But hey draw the line somewhere so you'll be on the water by spring!

Cougarman

Nordicflame

Why did Merc go with port injectin on the new 600SC with a screw?

Just an honest question

Strip Poker 388

Yea I just renewed my Sub I should be finished on the heads Wednesday. I have been out sick for 3 weeks and it had me down bad , I couldn't even work on the motors . Mark at Precision Marine talked to Dustin today and said there shipping the Blowers this week.

Cameron I wish I could make it .We Need to one year. We are going to the Car Show this weekend there In New Orleans.

Rob


Nordicheat not sure , But Merc is making there on Intake for the blowers.

amarket1

Cameron I wish I could make it .We Need to one year. We are going to the Car Show this weekend there In New Orleans.

Rob


Rob let me know what day you are comming in and maybe we can hook up.

Strip Poker 388

Sunday. PM me

rmbuilder

Rob,
What would the driving time be from Larry Meaux's dyno facility and the car show?
Bob