13 second pass.....finally :)

xr8ute · 17-09-2009, 12:01 AM

Tonight I finally ran a 13 second pass in my ute.

My best run was a 13.901 @ 100.47mph with a 2.133 60'. Only had three runs all up, first run I went gentle and ran a 14.0 @ 100.4x with a 2.19x 60'. Last run was a wheel-spinning basket case :P

I was shifting really early, about 5600rpm, so there should be more in it as it is.

Ran it in exactly the same "trim" as my previous PB (14.153 @ 99), but with the GT40X heads and some mild fuel and spark tuning.

This is still with the original unported Explorer lower intake, probably flowing 20-30cfm less than the intake port in the heads. Cant wait to see how it runs with a decent intake

CRAIGAU3220 · 17-09-2009, 01:01 AM

Great work....change at six grand and you will get some 13.7 time slips @ 101mph.

Cheers, Craig.

Falc'man · 17-09-2009, 01:43 AM

Awesome Dave, well done & congrats.

xr8ute · 17-09-2009, 04:06 PM

Thanks guys. Would be interesting to see just what happens to mph with shifts at 6000rpm. I am curious to see just how much the std explorer intake is holding the combo back.

Yousef, it must have been 18mths ago when I said i'd have the ute back on the road in a few months. It took a bit longer than that, but its done now and it works good

Maybe we should celebrate with a kart session somewhere

Falc'man · 17-09-2009, 10:12 PM

Quote:

Originally Posted by xr8ute

Thanks guys. Would be interesting to see just what happens to mph with shifts at 6000rpm. I am curious to see just how much the std explorer intake is holding the combo back.

Yousef, it must have been 18mths ago when I said i'd have the ute back on the road in a few months. It took a bit longer than that, but its done now and it works good

Maybe we should celebrate with a kart session somewhere

Absolutely. If you're still working in the Metro we'll organise something for the Indykarts at Revesby for a weeknight? Either way I'm not fussed.

I would love to catch up for old times sake, and to see this V8 ute...

XH5LWEPN · 18-09-2009, 12:41 AM

Nice work mate, great to see.
I doubt shifting at 6000rpm would help as power would be rolling over by then.

CRAIGAU3220 · 18-09-2009, 12:58 AM

Quote:

Originally Posted by XH5LWEPN

Nice work mate, great to see.
I doubt shifting at 6000rpm would help as power would be rolling over by then.

Just something to try, My car makes max power @ 5600rpm so for me i get best results changing at six grand and on the odd cold, crisp nights just before 6200rpm.

UU TS50 · 18-09-2009, 01:23 AM

wow ive been trying to change between 5000-5500rpm

**Stav** · 18-09-2009, 08:39 AM

Great work dave.Its been a beast in the making but the hard work is paying off

xr8ute · 18-09-2009, 02:31 PM

Quote:

Originally Posted by XH5LWEPN

I doubt shifting at 6000rpm would help as power would be rolling over by then.

Thats my gut feel as well (mostly because of the std lower intake), but I am a little dissapointed I didnt get the opportunity to find out.

Runner length and port flow aside, the minimum port cross-section of the explorer lower is crazy small. I haven't done the math, but I wouldn't be suprised if it is choking the 5L by 5500rpm. Must do that before I begin porting.

If I can sort my wideband, then i'll get out there in the next couple of weeks, otherwise I might wait until ive ported and swapped out the lower intake (probably a couple of months).

**Whoosha** · 18-09-2009, 04:14 PM

Great stuff Dave, welcome to the club

: took ya time getting there

:

xr8ute · 18-09-2009, 05:29 PM

Thanks Whoosha, definitely not in a rush...lol. Pretty keen to get a little closer to your PB though

Timeslips here in order first/second/third runs,