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philbey

Tech Moderator
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Everything posted by philbey

  1. Same crank. Same gudgeon pin size. Rods interchangeable. There's rumours of different thickness rods from different motors but I think that's between early motors (k, 3k etc) and 4k's/5ks.
  2. I've got the exact sucker Mick pictured. Yes it is a good piece of kit, much easier than others I've seen. That one in the video is pretty cool! I wouldn't want to be trying it on a set of 300 pound race springs though.
  3. First up dave, Kinematic viscosity is a function of density, so as the density changes this also affects the kinematic viscosity. Dynamic viscosity changes but doesn't drop off as fast. Secondly, hiro, You're not talking about a fixed volume. Gear pumps are positive displacement but they are a clearance fit only. As your oil gets hotter, the effective sealing of the gear pump is reduced as the viscosity changes and it's not pumping as effectively, so that's partially why your oil pressure will be lower as it's hotter. The point I was making is that you want to pass to the oil cooler as the oil heats up. Counterintuitively, using a pressure circuit will be less likely to bypass to the cooler as the oil gets hotter. Porsches run a secondary cooler loop and they're thermostatically controlled, not pressure control. And seriously, as the oil temp rises the oil pressure gauges in mine get frighteningly low. 911's run 2 thermostats as well, one for the primrary cooler and one on the secondary cooler. EDIT - that isn't to say that there aren't pressure circuits set up this way.... Just that it'd much much smarter to run it off Temp! EDIT EDIT not that it matters we're getting off topic sorry Cam.
  4. Pressure operated would never make sense, because as your oil gets hotter its density reduces and then your pressure will decrease. Which means as you get hotter you're less likely to direct oil via the cooler. (porsche owner here....)
  5. yeh those wheels rule, erik was it you with that cool daihatsu with the same wheels?
  6. pffft you'd know too cos you're usually there encouraging this behaviour!
  7. Get a puller. Seriously, it's the best investment you'll make, just get the tool for the job.
  8. I drive around the burbs grabbing people's wheelie bins, accelerate to 98kmh which is about when the wheels fall off and then send them careering into light poles.
  9. When I popped my stupid old heater tap off one day and dumped all my water, it was only a very brief couple of minutes to limp it down a side street but that was enough to do my head gasket. Bad luck mate.
  10. haha gold. xmoht, I got your pm about Helmholtz resonance and I've been mulling over it for a couple of days. That's all about tuning runner length so that the pressure wave at the right moment increases locally at the valve as it opens etc. Avoid getting too scientific about it: There's plenty of straightforward equations to size intake runners. Sure you want to make the most of this motor, but your plenum will NOT get big gains that cams and carbs will. I would say you'd be lucky if the difference between an average one and an excellent one netted you more than 5 horse power. As for the plenum, again there are rules of thumb about sizing them. You want the area of the plenum (cross sectional in direction of flow) to be greater than the combined area of your runners etc your biggest issue will be pressure drop; use trumpets inside the plenum, avoid sharp hard corners and edges etc. If you are game, download a copy of Fluent, model your manifold and learn CFD!
  11. If the rubber fails there's no way she'll spin any more. I'm with Taz, it's the wrong mark on the pulley.
  12. he already has a fuel only unit so if he want's to get started on the cheap then he's ready to roll!!
  13. Yeh replacing a pitman arm is likely to be more difficult than it first appears. You'll need the steering box out and then a decent puller to get it off the shaft. It's probably a tapered spline....!
  14. Speco website has them http://www.speco.com.au/gauges_ad.html also the same as the VDO item.
  15. The problem is that these fittings are funny mixes of sizes; probably a 1/8 GAS (or BSP) and a 1/8 NPT. I looked around quite a bit and that brass sucker is about all I could find....
  16. You only need a fuel only ecu for this, you've already got a dizzy.
  17. Yeh that's what I was thinking, you just swap out the bush like felix said and you can reconfigure the angle of the fuel bowls to suit???
  18. Consider this a flaming rob haha. That brass fitting looks like the standard VDO oil pressure sender T Piece. Interesting, I have the same item due to be fitted, am having second thoughts about it though!! Ezy outs will get that out no worries, take the whole oil filter mount off as mentioned and do it on the bench. That oil would have been spraying EVERYWHERE! ouch.
  19. philbey

    Spotted

    looks like Abbots ke20.
  20. Give him a yell and find out, I shouldn't be buying such frivolous goodies but hell this racecar has me inspired.
  21. man I dig how he went about mounting his gearbox on the angle, check his shifter too, I suspect he just bent it over a bit. I'm not quite understanding why he's got the spacer plate on the head though? it's not changing any angles, he's got a straight runner inlet manifold. Does anyone know where to get one of those manifolds, while we're on the topic?
  22. Haha but it doesn't stop Porsche making fast cars...! I like the sway bar, I've got a whiteline one for a KE10 at home and the brackets to mount to the control arm are ridiculous, I'm probably going to chop it and weld some adjustable ears on it and put spherical bearings on there like he's done!
  23. Packaging I would say. Especially in a KE10, they're a pain for dellortos, mine only just fit with a 36mm filter panel. If anyone tries telling you that you lose heaps of horsepower because of the piston side forces then slap them.
  24. He's probably about on par with most reasonable tuned K engines. I'm guessing that's flywheel horsepower I'm runnning just shy of 100hp at the wheels so I'm probably up around the 130 flywheel mark with high comp, big cam and twin 40mm dellortos.
  25. What rob said. Get your builder to plane the head to the comp ratio you want. It's no good anyone here saying "take 1.5mm off" it's all dependent on your current specs anyway.
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