Just tested out the Smarty VP44 Beta
09-01-2007 | 02:22 AM
#17
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From: Rio Rancho, NM
There are no valve seats. Valve springs are necessary though, if you get to enough valve float you can have the valve hit the piston. But you can also manage to get this with too much boost at stock rpm.
cspotrun: For us high altitude guys it would be very interesting to build twins with the HY and a clever wastegate. Maybe an SPS66 or something like that as a primary. Or maybe even an HX35/40 hybrid as a primary, should get you the nice HY spool and since you keep both compressors in the fat part of their respective maps it should suffice for something like 400hp with decent EGTs and decent backpressure.
cspotrun: For us high altitude guys it would be very interesting to build twins with the HY and a clever wastegate. Maybe an SPS66 or something like that as a primary. Or maybe even an HX35/40 hybrid as a primary, should get you the nice HY spool and since you keep both compressors in the fat part of their respective maps it should suffice for something like 400hp with decent EGTs and decent backpressure.
09-01-2007 | 07:18 AM
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From: W-S, NC
09-01-2007 | 09:23 AM
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I actually meant that on the 98.5 24V there are no valve seat rings, but the head is machined to be the valve seat- so there is no issue of dropping the seat on this engine.
09-02-2007 | 08:53 AM
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Actually I was wrong. I thought they changed it by year, I didn't know it was a HO/SO thing. Good information. But yes, thanks for clarifying Mike on the machined seats vs the pressed in, I wasn't clear on that.
09-02-2007 | 09:52 AM
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So where is this new update for the Smarty going to be released for the public actually? Does it seem to be a big difference of it over level 9 on the Smarty now? I'm guessing the update replaces level 9 with the new level instead....or how does it do it?
09-02-2007 | 11:47 PM
#25
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I hope that you guys are correct about only the HO's have them. I wish I would have checked when my head was off. I have been afraid of dropping one for along time & sure would be happy if this info is true.
09-03-2007 | 10:00 AM
#26
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From: Eastern Shore of Maryland
Didn't notice much difference with the new software on the dyno, just spun the rollers a lil faster to 127 IIRC But this was a lite modded truck Mach1.2's & Smarty on an HO Motor.
09-03-2007 | 03:36 PM
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From: Rural Hall, NC
09-03-2007 | 08:51 PM
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for the record, i tried this new beta over the weekend and was all excited, but i cant feel any difference, and it defuels at 3600. i did a free rev in neutral and it blew smoke all the way to 3800 rpms just to see if it was still fueling that high, but on the highway in 4 or 5th gear i can not get it to go past 3600, it falls on its face.
