The Mustang Forum for Track & Racing Enthusiasts

Taking your Mustang to an open track/HPDE event for the first time? Do you race competitively? This forum is for you!

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  1. Grant 302

    S197 Boss 302 in Chile

    I wouldn’t do that.Getting an accurate I.D. measurement isn’t as easy as it sounds. By the time you get to ‘matching’ I.D. and O.D. measurements, the fit of the two parts will be loose.
  2. Grant 302

    S197 Boss 302 in Chile

    This is why I hesitate to only recommend the Hyper Single. People have found what works, and the common denominator is the Exedy pressure plate. And any of their clutches seem more durable than other brands available.Maybe not a bad time to consider the whole setup. Now that you have more aero...
  3. Grant 302

    S197 Boss 302 in Chile

    Toasty. Recycle it.Well, as long as you don’t find more blue twine dingle. That was pretty messed up. I hope you can laugh about that now.Good idea. 👍
  4. Grant 302

    S197 Boss 302 in Chile

    Lol. Not gonna correct that. Must be Freudian
  5. Grant 302

    S197 Boss 302 in Chile

    No. It’s more that I know you drive on the street, and that most will parrot the hyper dingle recommendation without regard to which one is best for you.
  6. Grant 302

    S197 Boss 302 in Chile

    290°F? Oil temps? How hot with the grill off?Glad to hear no engine issues otherwise.And on the clutch...I agree about going Exedy, ...but I’d also consider one of the other series too, besides the hyper single. Good luck with the repairs regardless. Good showing, even though DNF. 👍
  7. Grant 302

    S197 Boss 302 in Chile

    iBueno suerte!
  8. Grant 302

    S197 Boss 302 in Chile

    Noting wrong with that if it’s clean enough for the silicone dab to bond to it. I’d always try to make sure it’s tacky during assembly and not too skinned over and dry. I’m talking about the 4 points where the block, head, and cover meet.
  9. Grant 302

    S197 Boss 302 in Chile

    Did you find the source? Good luck being leak free!
  10. Grant 302

    S197 Boss 302 in Chile

    Yeah, short or something open or loose.
  11. Grant 302

    S197 Boss 302 in Chile

    Gotta hook up to a can. Pop in breathers will get oil all over.That should work. The hoses should slope so any oil drains back into the crankcase.
  12. Grant 302

    S197 Boss 302 in Chile

    Ack! It’s running cooler because you’re ingesting all the hot oil vapor! Just kidding.No catch can will stand up to track use, and it’s best to vent to keep your intake tract oil free. Not that it would explain significant power loss, but it’s certainly not gonna help.Good luck with the...
  13. Grant 302

    S197 Boss 302 in Chile

    Nice update, but ditch the catch can for a breather setup (like Petersen) if it isn’t already. And where are the oil leaks?
  14. Grant 302

    S197 Boss 302 in Chile

    Sounds good to me. Both pressure and temps tapped after the coolers?Good luck with the rest of break-in and shake down runs!
  15. Grant 302

    S197 Boss 302 in Chile

    180... °C?Or 180° F coolant?How do the oil pressures look?Looks like nice power output and decent gains. Good luck eliminating the misc suspension noises.
  16. Grant 302

    S197 Boss 302 in Chile

    I know you understand the concepts. I think there’s small differences in the finer points and details. And some of that matters with the actual effects of oil system changes.I don’t have one loose or I’d take dimensions. But oil goes out those two ports and maybe a dozen times each since...
  17. Grant 302

    S197 Boss 302 in Chile

    Start with the ball joint open. You can start closing it and flow will stay the same and gauge pressure will rise all the way up until the bypass pressure is reached and the relief valve opens.And yes, the lever would likely be past half way on a 90° ball joint before that happens.Yes. At...
  18. Grant 302

    S197 Boss 302 in Chile

    If you do go to an oil/water setup, I’d consider something like this teeing off some of the cold side coolant flow.https://www.pwr.com.au/products/oilcoolers/inline-engine-oil-coolers
  19. Grant 302

    S197 Boss 302 in Chile

    ^ I wouldn’t do this. Any air kicked upwards between the fender liners will ‘compete’ with the air trying coming out from the radiator and engine bay. The only place I’d vent a tunnel is into the gap between the fender liner and wheel/tire. Biggest drop is likely from adding the squirters. They...
  20. Grant 302

    S197 Boss 302 in Chile

    Except that the system is using a positive displacement pump and that the flow doesn’t go down at the bearings. So barely trickling out at the end of a garden hose isn’t a good example. Flow stays the same - that’s the important part most people don’t get.One example is to look at the 2 dinky...
  21. Grant 302

    S197 Boss 302 in Chile

    Understood about the combining...as well as some of the advantages. But for the cost (without checking current prices) and the space, I’d still consider other options/combos.
  22. Grant 302

    S197 Boss 302 in Chile

    But it’s enough to point to a cooling capacity problem. Consider the OEM cooler to be worth in the 45,000-60,000 range and that there are (old) examples of running hot with it in addition to either a 925 or 934.Keep in mind that the squirters put a higher heat load on the oil because they...
  23. Grant 302

    S197 Boss 302 in Chile

    Maybe a few more questions before you buy anything...what were your worst oil temps and what track and conditions for your last engine using the two coolers?Good stuff. But I would definitely caution anyone from drawing any conclusions without completely understanding what values they’re...
  24. Grant 302

    S197 Boss 302 in Chile

    Two problems with that method...The 948 has 20% more rows and 23.7% more fins.Two pass heat exchangers increase efficiency, but not by that much and your two core series setup effectively acts like a two pass h/e. I think less than a 10% increase.Your setup does have the advantage of...
  25. Grant 302

    S197 Boss 302 in Chile

    That. Always that.
  26. Grant 302

    S197 Boss 302 in Chile

    I think so. Search ‘Fram oil filter cutaway’. They have a long history of using cheap materials. Like cardboard and twine.
  27. Grant 302

    S197 Boss 302 in Chile

    I’d say that’s the right way. To have the second one on the bottom.Swapping/Putting the 925 on the bottom (and second) could be an option if boxed appropriately.
  28. Grant 302

    S197 Boss 302 in Chile

    That looks good...except for the FRAM filter!If I’m seeing it correctly, the 925 is fed first?IF there are any oil cooling issues that show up I’d box the 915 first with a larger inlet than the 915 core.I’d also protect it with nomex honeycomb regardless.
  29. Grant 302

    S197 Boss 302 in Chile

    Doesn’t sound like enough oil cooling capacity. I mean for your expected HP levels, shorter relatively low speed technical tracks, enduro use...possibly running on hot days.Where are the two coolers located?And I wouldn’t block anything past the oil pan or so until you are certain you don’t...
  30. Grant 302

    S197 Boss 302 in Chile

    Yes, like that! The ends are closed and tuning is done by length of the J pipe and it’s location. They work by dividing the pulse and reflecting it back into the main stream between pulses. The J itself can be made a bit tunable using a sliding connection to adjust its length.Sounds like...
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