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Recent content by Spimage

  1. Spimage

    Dry Sump Breathing?

    Thank you Patprimmer for your prompt response and expert advice. The motor is still pretty new and I'm not particually looking for vacuum or positive pressure in the crankcase, if I am wrong here, please forgive me for my ignorance. My objective is to prevent what has been happening, ie...
  2. Spimage

    Dry Sump Breathing?

    I am running a Cobra Replica with a Chevy V8 377 cu.in., with a dry sump, 3 stage pump, ( 2 scavenge, 1 pressure ). A breather on the one valve cover and a PCV valve on the other, going to the throttle body. From the resevoir tank ( capacity - 8 liter ) I have a 1/2" flexible pipe to a...
  3. Spimage

    Throttle Body - What size do I need?

    Thanks guys for the response, it would seem that the throttle body is ok, that being said, could it be excessive back pressure in the exhaust system?. I am using 4" side pipes with 2.48" perforated inner pipe (+ - 40"), Any ideas as to what the max back pressure should be. Regards, Warren.
  4. Spimage

    Throttle Body - What size do I need?

    Thanks for the response guys and hopefully the following info will answer your questions. Heads: Brodix Track 1 CNC Ported Intake: Victor Junior ( At the time, not 'Port Matched') Valve springs: 240 lbs seat pressure Camshaft: Comp Cam part # 12-705-8, Mechanical Roller...
  5. Spimage

    Throttle Body - What size do I need?

    I have a 377 cu in Chevy V8 with all the mod-cons incl. the "Haltech" fuel injection / management system. My problem is that on the 'Dyno' it is peaking at 200 kw at 5500 rpm and holding this through to 7500 rpm. I suspect this due to restricted breathing, the size of the throttle body is a 4...
  6. Spimage

    Scrub Radius, effect on steering centralising ?

    Thanks Guys for the response and apologies for for not including more information on the car, which if I may, do so now. It is a project (Prototype) which we have been busy on for four and a half years (full time)& yes it is a replica of an AC Cobra. We decided from the onset to create a...
  7. Spimage

    Scrub Radius, effect on steering centralising ?

    I am currently running zero 'Scrub Radius'on the front wheels of my Cobra. My question is, what effect (if any) will a positive or a negative scrub radius have on the centralising of the steering, whilst moving in a forward direction? Rod end bearings are used on upper and lower control arms...
  8. Spimage

    Fuel Injection, What pump to use?

    1Bluegrass Thank you for the prompt response to my query. I am using two Bosch pumps in parallel connected with a Y piece into a 10mm line to the motor. The Y piece at the motor end, feeding the rails is 6mm, being the same size, as the bridge between the fuel rails as supplied by crowd from...
  9. Spimage

    Fuel Injection, What pump to use?

    I have a 377 cu in chevy motor in my cobra (Prototype) and am having a problem with the fuel injection system,in that, I'm told that the system needs a constant 3 bar (50lbs) pressure up to max revs. However, on the dyno, at 4500 rpm the pressure starts to drop off. I need to decipher what fuel...
  10. Spimage

    Adjusting Corner Weights ?

    Hi Guys, Thanks to all of you for the prompt response, In answer to questions, 1. By 'Torsion Bars' I do mean 'anti-roll bars', 2.Whilst I don't have corner scales, I do have access to such and really would like to do the set-up myself.
  11. Spimage

    Adjusting Corner Weights ?

    I need to set the corner weights on a Cobra replica in order to optimise the handling of the car. Any tips on the proceedure to achieve such, would be appreciated. (The car has coil over adjustable shocks and adjustable torsion bars, both front and rear.
  12. Spimage

    Castor Angle? Help

    I am running 1.5 deg. castor on my cobra replica,(double wishbone) & find the car is not "Tracking" too well. I plan to fabricate new upper & lower control arms, however, before I do, I am hoping that someone out there can give me an indication as to what an 'ideal' castor angle would be.
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