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ol doc gully

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About ol doc gully

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  • Location
    oslo, norway
  1. Turbo sizing, comparison, etc

    pretty great walkthrough for compressor size calculations from Garrett: https://www.turbobygarrett.com/turbobygarrett/choosing_turbo
  2. L28 engine - tough?

    ive been surprised at how much abuse mine has taken but thats incredible. how long might it have been running without coolant? it was completely empty? its also the main reason i will stick with the L series - worry free vintage lapping.
  3. been a while but came across some more pics from mid-ohio i realized i never posted on here
  4. Crazy idea? Seeking opinions on this intake

    the main/easy correlation is with length - short runners for high rpm performance, long runners for low rpm performance. this has to do with benefits from tuning for pressure waves as much as actual flow. diameter has to do with velocity and so is more of a dependent variable based on other design factors. i like the idea of this manifold for a mild/street turbo application though. long runners for good low rpm response and boost for high rpm. i think the runners are still a bit long for that though, so i think you're idea of welding a plenum to the lower section is great. but whats teh point of any of this if the flange doesnt fit? i agree but a few pesky clarifications aftermarket manifolds are entirely built for high boost/high rpm - thats why they look like they do. doesnt mean they should be used as a guide for intake manifold design and doesnt mean they are right for everyone. for instance, factory RB manifolds look a lot like the diesel manifold being criticised here (pictures below) also i entirely agree that the injector placement in the proposed manifold is... far from ideal. seems to be a convenience factor based on where the original flange was. but FYI the common practice of injector placement at the head is actually primarily to help with emissions (esp cold start) but the goal is just getting a well homogenized/atomized mixture in the chamber and there are other alternatives.
  5. intake design Q

    i know this is an old thread but as a person looking into these kinds of setups i havent found a more concentrated source of useful information so i think it deserves a bump i've been specifically researching the holley terminator EFI to replace the holley 390 on my clifford for a turbo setup -- SuperDan, did you ever go turbo? very glad to hear the terminator CFM isnt too high, was worried about the same. i also definitley would not have thought of the heat shield being so necessary. anybody else using any of these 4bbl TBI setups in a turbo application? also curious how well the Holley HP software can be setup to deal with boost - will be my first time tuning an engine but that kind of work is close to my profession so im excited to learn also as was said earlier im tempted by the potentially short/direct path from turbo to intake.. although i have low boost aspirations im still hesitant to try it without an intercooler (even though blow through guys do it all the time).. any thoughts on air-to-water intercooler setups?
  6. N42 header on a N47 head?

    Haha OK.. let me know if you don't end up using it.
  7. N42 header on a N47 head?

    hmm PM me how much... i come to Rochester often for work but thats still not too close to you so we'd probably have to ship
  8. N42 header on a N47 head?

    How much is left on the table with a square port header on round port head? It's the setup I've always had since its how my car came, but just wondering how motivated I should be to replace it. Seems like it would be leaving a lot on the table, so just curious if anybody has switched between the two. (Sorry, i know its an old thread, but is the main one that keeps coming up through search and most relevant so figured I'd ask here.)
  9. you should get some glamour shots on the stand with both the fuel line block and the head assembled - i bet they would make facebook rounds quite quickly and get you some more interested parties ...as well as dress up my work laptop desktop
  10. man... the fuel lines and ITBs really brought this thing to life. love the motivation, care and crafstsmanship. thanks for letting us peak in, its a pleasure to be following.
  11. Hahaha indeed - "there's over 1,000 hp in this photo!"
  12. got into one of the last track days at Mid Ohio - great success, car ran flawlessly then just this past weekend finally made it out for a cruise in Hocking Hills, and got some good pictures in before winter hibernation. AWESOME roads out there, will be going back a lot in 2016
  13. DIY shift indicator light with distributor/coil?

    Yeah I'm not too keen on a buzzer but I am going to toy with different light placements - I'm kind of thinking if I place one near the windshield defrost vent it may work as a makeshift heads up display... as long as its bright enough... Otherwise the clam shell is at least the least worrisome part to drill into so i may just put a more subtle light there.
  14. DIY shift indicator light with distributor/coil?

    Well, it looks like i'm already on the path set forward by dirt cheap chinese manufacturing, but I do appreciate that input; especially since I'd likely be going that route if/when the ebay piece breaks.
  15. DIY shift indicator light with distributor/coil?

    Yeah I never had any problems switching to electronic dizzy but have definitely heard of others'. Ordered the dirt cheap shift light so I'll let y'all know 'how' crappy it is ..eventually, apparently it's coming over from China via canoe.
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