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  1. jdub

    what kinda oil to use in 1j?

    I'm not doubting it...at least Jose is using a 0W-50 that will flow better than a 15W or 20W50 on engine start. But from what I've seen using controlled test criteria and engineering data...a multi-grade 50W oil is not optimum oil film thickness on engine bearings. Of course that depends on...
  2. jdub

    what kinda oil to use in 1j?

    Mobile 1 did change a few month ago...changed the add pack as well. It's still an excellent oil, but from what I've been reading on it, they switched to a Group III base stock vs the POA base used previously. What's ironic is Exxon sued Castrol several years ago over the term "synthetic"...
  3. jdub

    what kinda oil to use in 1j?

    That seems to be the consensus...at least for their top tier EP oil. Exxon is not saying, but various oil analysis is pointing at Group III for Mobile 1. Consider the German Castrol 0W30 (European Formula)...it's an excellent oil and not nearly as expensive as RP or Redline. A good filter...
  4. jdub

    what kinda oil to use in 1j?

    Good call ;) A 0W30 or 5W30 will give you better flow at engine start.
  5. jdub

    throwing codes!!

    That's good...don't do it. Cleaning an AFM w/ carb cleaner is one of the best ways I know to kill it. Test the AFM per the link above.
  6. jdub

    what kinda oil to use in 1j?

    Mobile 1 is an excellent oil, but it's not a true synthetic. It's a Group III hydrocracked mineral oil. If I'm going to pay syn prices, I want a true syn oil. Castrol German 0W-30 and Royal Purple are a Group IV PAO base, Redline and VP Racing are a Group V ester base, Amsoil is a PAO/ester...
  7. jdub

    JE piston carnage! lots of pics

    Only one thing causes this kind of damage...detonation. Likely a result of excessive dynamic compression in the combustion chamber...your combustion temps went through the roof. There's not a piston made that can take that kind of abuse.
  8. jdub

    89-92 Tranny

    The 340E is pretty much the same for the GE & GTE. The GE has a lower stall torque converter and a different ETC shift schedule.
  9. jdub

    throwing codes!!

    Code 31 Troubleshoot: http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=FI&Page=57 Did you happen to clean your AFM (with electronics attached) recently with something like carb cleaner? Code 34 is fuel cut...you will hit it boosting between 10-12 psi on a stock AFM...
  10. jdub

    Alternate Pulley for the 7MGTE?

    ATI dampner...don't know if they are still on sale. http://www.supramania.com/forums/showthread.php?t=32431&highlight=damper
  11. jdub

    water pump question

    I'm not doubting you at all...I'm trying to figure out if the one I have is some kind of after market/rebuilt pump. It too is marked Aisin. It was advertised as an OEM pump w/ stainless impeller...I'm looking for the receipt now.
  12. jdub

    water pump question

    Hmmm...the one I installed did have a SS impeller...I checked it with a magnet myself. It was an OEM pump...bought it online. Are there different versions of this pump available from the dealer?
  13. jdub

    Tell me it aint so....

    Andy - No I'm not ;) You also have the knowledge, shop, and the tools (or access to them) to do a lot of things yourself...as do I. I do believe if you are going to take the time and make the effort to do something...do it right. My time has value...when I am going to do something major...
  14. jdub

    Oil Drain Plug

    Here's the cheapest place I've found to buy a Fumoto: http://www.lubricationspecialist.com/index.php?cPath=12&html=fumoto.htm $24.95 w/ safety clip and shipping.
  15. jdub

    New Product from SIP 3000 Stall Torque converters

    FYI - the stock stall speed on the turbo 340E is 2500 rpm: http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=AT&Page=32 A 3000 rpm stall converter is not a huge increase...I have one and it is great for street use. You can hold the brake, rev the motor to 3000 rpm, and...
  16. jdub

    MHG Question

    There's more to it when you select a type and size MHG. The thickness MHG, brand of piston, and boost impacts compression pressure in the cylinders. You need to realize what pistons you choose and the machine work on the head/block does. The stock piston size is 83mm...for each 0.020"...
  17. jdub

    Tell me it aint so....

    JS - if you're going to take the head to the machine shop, have a valve job done while it's there...I'm not talking about major upgrade, just have the seats re-done (3 or 5 angle) and seals replaced. Have the guides and springs checked and replaced as necessary (probably all good...doesn't hurt...
  18. jdub

    oil filters?

    :) That VP oil is good stuff...pure ester base...jeez, what more can you ask for. Good to hear it's working well for ya ;)
  19. jdub

    oil filters?

    Got the filter head installed and running a PureOne at the moment...got about 700 miles on the filter. Figure I'll run it another 1500 miles or so and switch to the Trasko. I've noticed the tranny is shifting smoother...it's less abrupt with this modified valve body I've got. I plan on...
  20. jdub

    Tell me it aint so....

    Using the spray on a composite HG is not a problem and can help fill in small imperfections. Assuming you did not deck the head/block, remove all old HG material. Make sure the HG is properly aligned. Just make sure you torque the ARP stud to spec (81 ft/lbs) using the TRSM pattern...