10sec XTGT - photos and video - Page 3

XT302 · 12-03-2011, 11:10 PM

Update. Had the carby looked at to stop top end leaning out.

So off to wsid today for the test and tune.

Only 3 passes ( video etc to come)

1st pass staged broke the beam and counted to 3 (still no cage fitted) then off...12.9@122 still leaning out up top

So off with the radials and on with the 205 maxxis

2nd pass 11.16@125 whoohoo a pb

3rd and final pass 11.13@126.02 another pb

So a bitter sweet meet, new street tyre pb but still leaning out top end. So need to do a bit of research, fit a guage and see if holding/correct fuel pressure and maybe try/borrow a electric fuel pump see if the mechanical has finally met it's limit

HEMI POWER · 13-03-2011, 04:24 PM

Quote:

Originally Posted by XT302

Update. Had the carby looked at to stop top end leaning out.

So off to wsid today for the test and tune.

Only 3 passes ( video etc to come)

1st pass staged broke the beam and counted to 3 (still no cage fitted) then off...12.9@122 still leaning out up top

So off with the radials and on with the 205 maxxis

2nd pass 11.16@125 whoohoo a pb

3rd and final pass 11.13@126.02 another pb

So a bitter sweet meet, new street tyre pb but still leaning out top end. So need to do a bit of research, fit a guage and see if holding/correct fuel pressure and maybe try/borrow a electric fuel pump see if the mechanical has finally met it's limit

Top effort guys

XT302 · 13-03-2011, 04:54 PM

This top end fuel issue REALLY starting to BUG all involved

But still going forward in some areas, so cannot really complain

as promised

http://www.youtube.com/watch?v=O-Tj3lmyjjg

Stefan · 13-03-2011, 08:02 PM

Garrett,

I don't understand why someone of his experience in racing is running high 10's and keeps using a mechanical fuel pump and then wonders why its leaning out.

XT302 · 13-03-2011, 09:23 PM

Ooops forgot one

Stefan,

I suppose comes down to 2 reasons, generally electric pumps are REAL noisy and don't seem to do the distance when used on the street often.

BUT we were shown a pum yesterday no regulator required and QUIET AS

Also his current mechanical pump is rated and 200gpm? and on the dyno and street tyres doesn't show any dramas "only" when radials are fitted so possibly standard pick up location or some else?

Bit frustrating but at the end of the day like everything else is only time/money till sorted

Stefan · 13-03-2011, 09:35 PM

Even on my car the engine builder told me if I run radials I must run an electric pump even though it runs rich on the dyno right through the rev range.

I can only assume fuel pump can't keep up at launch and simply can't recover.

XT302 · 13-03-2011, 09:36 PM

Exactly what we are starting to think

jcxr · 15-03-2011, 09:06 AM

If the radials are lower profile, you may be going through the traps at a higher RPM and thats when you need more GPH.

XT302 · 15-03-2011, 11:39 AM

Overall diameter of the radial is bigger than streety, from memory 25.5 (street) to 26" radial

XT302 · 15-03-2011, 12:34 PM

Corrected 25.3 (street) 205x70x14 , 26 radial 235x60x15 MickeyT

XT302 · 21-05-2011, 08:15 AM

Bit of a update, new electric fuel pump and fuel line, still having top end issues

But Wednesday night saw another PB (ET) 10.82sec @ 125.5mph

HEMI POWER · 24-05-2011, 06:24 PM

Quote:

Originally Posted by XT302

Bit of a update, new electric fuel pump and fuel line, still having top end issues

But Wednesday night saw another PB (ET) 10.82sec @ 125.5mph

Nice work.

naughts · 24-05-2011, 06:47 PM

Quote:

Originally Posted by XT302

Bit of a update, new electric fuel pump and fuel line, still having top end issues

But Wednesday night saw another PB (ET) 10.82sec @ 125.5mph

Damm good MPH, but, get those 60ft times down!!!!!!! that things got a 10.6 in it if you can improve 60ft times

XT302 · 25-05-2011, 02:22 PM

I am sure it will go better once fuel issued sorted, dare say 60ft reflects the hard standard suspension...

XT302 · 17-07-2011, 12:51 PM

At WSID now first pass on 205 street tyres 11.3@127.3 second pass 11.01@127.92

XT302 · 17-07-2011, 02:49 PM

10.91@127.92 on 205 oh yeah baby

XT302 · 17-07-2011, 05:03 PM

Sorry for the IPHONE quality video

http://www.youtube.com/watch?v=XFTa_vZhThY

naughts · 17-07-2011, 05:23 PM

Put some real tyres under this thing.. PLEASE !!!!!!

HEMI POWER · 17-07-2011, 06:10 PM

Oh man that is a ripper,god dam on 205 street tyres.Love the laugh at the end too.

HEMI POWER · 17-07-2011, 06:12 PM

Quote:

Originally Posted by naughts

Put some real tyres under this thing.. PLEASE !!!!!!

It is on real tyres it's a true street car

Gotta love this car.

Easily the tuffest GT around.

bbcoupe · 23-07-2011, 04:10 PM

Great work, thanks for the info.

You guys are lucky to get so much track time and be able to monitor your adjustments!
I got to Heathcote recently and ran my first 1/4 in 6 years, hopefully again later this year.

I only had time to make one adjustment as mine was leaning out at the top end as well. Bumped the jets up a couple of sizes(primary and secondarys)which helped the problem.

Any other threads with more info on the XT?

XT302 · 24-07-2011, 10:25 AM

No other threads, what are you looking for? I may be able to provide it.

Cheers

XT302 · 24-07-2011, 06:35 PM

Organise Wato and you to come to WSID for the 17th sept and I will organise the tickets, I may even ve able to hand the hat around and sort those two tickets for free to say thanks for your effort

bbcoupe · 24-07-2011, 08:27 PM

Thanks for the invite, sounds like a good day, shame we aren't closer.

HEMI POWER · 24-07-2011, 08:29 PM

Quote:

Originally Posted by XT302

Organise Wato and you to come to WSID for the 17th sept and I will organise the tickets, I may even ve able to hand the hat around and sort those two tickets for free to say thanks for your effort

I might have to venture out for that one.Let us know mate if i still have the BA i want to give it a squirt down the 1/4.

XT302 · 24-07-2011, 10:10 PM

No worries bbcoupe.

Hemi power you know the door is always open for you... So let me know sooner rather than later cheers

XT302 · 04-09-2011, 12:12 AM

Today's effort on mt drag radial, one hit then seeya lmao

10.54 @ 127.98mph

103.35 to half track

timeslip to come

naughts · 04-09-2011, 07:10 AM

Top effort!!!

XT3VCruiser · 04-09-2011, 10:55 AM

Very impressive time there XT302

XT302 · 04-09-2011, 04:27 PM

We (the crew including myself and the owner) think it is

Live to know what it would be capable of set up specifically to drag race?

Bit hard too without the cage you get one crack then punted from track, owner was well confident of better times on the day, still leaving a tad off idle no where near the stall