I would say there is 5-10kpa of creep above 6000rpm. Nothing noticeable, but it's there if you look at the data.

Should be 3kpa at most. I usually see none, even down at 7psi.

Andrew, that is with the 6758 and the "Medium" BW actuator?

That is both turbos on the low or medium actuators. 6258 should be 7psi on low, 10psi on medium with no EBC. I would have to look at logs of the 6758 on low, but on medium it's the same (10-11psi). No creep on any of the combinations.

This is with EBC set on a constant value (30% DC). So it's not true "creep". Just a rise in boost pressure as RPM increase. Dropping EBC duty cycle tuned it out just fine.

We didn't do any wastegate only pulls.

Setup Mode all 30% DC.

https://cimg4.ibsrv.net/gimg/www.mia...86c3077ee8.png

Setup Mode all 35% DC

https://cimg9.ibsrv.net/gimg/www.mia...9cd823c7a0.png

Random Basic Mode. (200 on the slider I think)

https://cimg2.ibsrv.net/gimg/www.mia...2bde7e4890.png

Overall it was great. Started to rain before we could dig in more. Very impressed with the setup. Cannot wait to get mine on.

And the video in non retard mode

http://m.ebay.com/itm/99-00-MAZDA-MIATA-MX5-DOHC-ENGINE-6-SPEED-MANUAL-TRANSMISSION-JDM-BP-BP4W-/371784478765?nav=WATCHING_ACTIVE



seriously considering this. Figure $2,000 for this plus another $1,500 for refresh and assembly? I have rods, boundary pump, arp studs, Sm damper already. Yay or nay?

recoup a little selling left over stuff when I'm done plus sell my non blown up na8 engine and 5 speed. Or keep na8 for when I blow new one.

whats so good about it?

You can buy a vvt motor and 6 speed for less than that.

Yeah, I was going to say... Either I have friends that have an eye for stupid good deals or that setup is incredibly expensive.

I bought a JDM VVT motor with a 6 speed AND a squaretop for less than that.

why overpay for low miles JDM if you are rebuilding anyway?

vvt motors can be had for $500 at junk yards, and $600 for 6spd

That's a terrible core candidate.

THE PEOPLE HAVE SPOKEN!

We can usually get good VVT cores at AR for a few hundred less than that. I don't think I've ever seen $500 cores, but we've gotten a few 100-150k motors. These are motors we do a water pump/timing belt job on and drop in the car, generally very clean.

where? I have been searching and I'm not seeing these vvt 6 speed combos for less.

Also Ebay. But now that I think about it, mine was mis-listed as a BP4W, and I called the seller a few times to make sure it was the thing in the picture :)

It only makes sense if you're going to run the JDM motor as-is. You have an NA8 block, use that! Especially if you're going to refresh whatever VVT/BP4W head you get.

The car is running now so I would like to keep it that way while building a motor. I am going to need a 6 speed same time I Uograde. The bp4 heads seam to go for almost as much as a complete engine and I am going to need all the stuff that it comes with like intake and such. My thought process of using a core in good shape is I could possibly get away with reusing the stock pistons. I only want to upgrade those if I have to.

Call junkyards, check craigslist, and facebook groups local to you that sell this stuff. A friend just recently bought a NB2 engine/trans/intake with a clutch for like 600 or so. It had about 100k on it.

1995 Ford Escort GT


What about a Escort GT as a core? Low ball this guy for like $200 or $300?

Duuude. Don't pull that motore. Put the TSE kit on that.