ZX 225 with 225 HPDI

[frej1]

My jack plate is currently set at the 2nd notch from the top. How much higher should I be able to raise it? I'm running 25 psi water pressure. With a full load with 27 T1 67mph at 5400 RPM and full load with 25 T1 67 mph at 5600 RPM. I think these numbers should be higher from what I've read on here.

2007 ZX 225
2007 225 HPDI with series 2 powerhead installed 2010
12'' slide master

[GM482V]

Leave the 25 on, and jack it up till your water pressure drops, then lower it one notch. My 06 ZX225 would run 76 @ 6000 rpm jacked way up.

[SkeeterBob]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by GM482V &raquo;</td></tr><tr><td class="quote">Leave the 25 on, and jack it up till your water pressure drops, then lower it one notch. My 06 ZX225 would run 76 @ 6000 rpm jacked way up.</td></tr></table>

+1

[frej1]

I'll give it a try this weekend!!

[MikeZ]

What are the torgue specs on the jackplate after you raise the motor?

found it:

http://www.bbcboards.net/zerothread?id=298205

[512]

You are running a 12" JP and I am running a 10" but my motor is set at 2 1/4" below the pad. I get 70-71mph tuning a 25T1 at 5500 rpms and 74mph turning a 27T1 at 5400rpms.

[frej1]

I raised the jack plate about 1/2'' and ran a little over 70mph with 21 psi water pressure. Prior I was running 25 psi water pressure. What is the minimum WOT water pressure I can run?

[GM482V]

I wouldn't go under 12 psi