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  1. Oz928BOY
    12-20-2009 12:03 AM
    Hi Mark im interested in the e-Ram but im worried about how my '83 928S 5spd (CIS) will work how will the fuel system work for it and attaching the system to the idle control/throttle or wherever it goes!
    Can you give me some info on the installation and modifications nessaccery to make this work?
    Cheers
    George
    AUSTRALIA
  2. mark kibort
    11-29-2009 10:44 PM
    stock S4 5 liter, is 100mm. Yes, my engine now, is a 6.4L and has 103.7mm pistons. 92mm stroke and I dont know the rod length.
  3. g.orruņo
    11-29-2009 03:17 PM
    Hello Mark! i have a question, what is the stock diameter of the s4 pistons?? what i need for stroker my engine? crankshaft piston and connecting rod? i see a 104 mm piston who sell in this page..what is your opinion? your engine is a 6.5 l?
    thanks
    german
  4. mark kibort
    04-27-2009 03:12 AM
    unfortunately they didnt. Still investigating why.
  5. Mongo
    04-25-2009 03:07 AM
    Hey did the spacers work out great???
  6. mark kibort
    02-21-2009 02:49 PM
    Hi Ad van der Lee,
    the 4.7 liter engine was sold a year or more ago. Ill see about finding out where that ad is placed and fix it.

    thanks,

    mk
  7. Ad0911
    02-21-2009 12:09 PM
    Hi Mark,
    i see you still have that 4.7L engine up for sale. You offered it to me a long while ago. It seems very tempting to me. Problem is, I live in the Netherlands. I am trying to find out what shipping would cost me via DHL. To find out the shipping cost, I need to give the location from where the engine needs to be shipped. Can you give me size, weight and location?
    Pleas also give me some details about the engine. It should be in pretty good shape (near new as you call it). Has it been overhauled or is it original with little use? What comes with it? I mean, how complete is it?

    Hoping to hear from you soon,

    Ad van der Lee
  8. mark kibort
    12-27-2008 02:30 AM
    part 2

    The hood vent looks good, becuase it seems to be so in fashion these days, mainly due to the downforce contribution. I dont mean to be too critical of it, because obviosly you have made some effort and perminant changes to the hood. However, you could change this to a positive, by going back to the normal intake air sources, and using this for frontal downforce. Ill have to go back to the pics to see if the rear vents can be used for venting the engine heat out, similar to the vents on an Aston Martin. If there is some distance from the rear edge of the hood, then they might do this as well.
    I actually made mine a little larger this season, and I think it must be good for getting some of that heat out of the engine compartement as well.

    If you are not doing some hard core racing, I wouldnt worry much about it. Even if you are, the differnces are going to be very minimal.


    keep me informed. You know I like this stuff!

    mk
  9. mark kibort
    12-27-2008 02:29 AM
    Actually, venting the air coming from the engine compartment that has the higher pressure air , will help neutralize the pressure zone at the hood inlet, but never really do anything. However, if you seal it off except for the vents, you will be sourcing air from the vacuum area of the hood. the hole will change the vacuum at that opening point, mostly by the shape disrupting flow, so you could have some stagnation that could drive the pressure up, but it generally will always be lower pressure (lower than ambient pressure. not absolute vacuum. ambient would be 14.7psi, so under the car is near ambient, at the nose is more like 15psi , at the base of the windshield is also 15psi, and the hood area we are talking about would be 14psi, as an example of relative pressures.)

    Part 1

    Mk
  10. V8 Man
    12-27-2008 12:46 AM
    Hey Mark!

    Thank you for the input on my hood vent I have great respect for you, and what you have done to the Holbert car. Everything you say about the aerodymics around the hood sounds corect, but remember that I`m not finished with the scoop yet. I plan to seal it completely from the air going in the engine compartment, and lead the cold air directly into the intake tubing. So there will be no venting from the pressure zone under the car.

    You are talking about a vacume over the hood. Don`t that meen a lower pressure than under the car(wing)? Lower than 1atm. yes, but absolute vacume?

    Do you think my louvres will be effective in lowering the ambient temp. in the engine compartment?

    Thanx

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