1395 is completed.... Track time completed

[RacingJake]

Thanks Rob, your bike is fast too :twisted: , your's is setup for the street and mine the drags. I give all my credit to the slick, gearing and bars. I bet your bike could run in the 6.80's without bars with just some more gearing.

Never been to the 1/4 with this bike, hopefully this summer. I sort of compare my bike to Rosco's bike since he was running the same engine 1166 but he has flatsides and the drag chassis so his makes more powered and is a few tenths faster. He runs around 10.10-10.20 in the 1/4.

As a 1166 my bike would run in the 6.50 range all day long in the 1/8 so I'd say in the 1/4 it might go 10.50. But as a 1395 now with the stock 1100 head it's most likely running in the high nines. Pulls really good now in the higher gears and should only do better when the 1150 head goes on soon.

As for carbs when my bike was stock 1075cc or even as a 1166 with cv 34 carbs with pods she go lean in the upper gears at wot. Anything smaller than a 140 mains jets she hit a wall. I tried the dyno jet kit and max out the jet's and needle's and still had the same problem. So I put oem needles back in and use either 150 or 160 main jets. Mikuni jets are the only one's I run now.

Now with the GSXR 750 38mm carbs i'm still using stock needles but have 160 jets in it. The exhaust pipe residue shows it running alittle rich but the plugs look good and tan. But when I start making a few hot laps at the drags I like to know I'm not melting anything inside the engine.

Chasing a lean condition is a pain in the butt, but I like to start out rich and work my way back. I'm sort of a backwards guy anyhow.

PS That check should be showing up real soon

[Anonymous]

Chasing a lean condition is a pain in the butt, but I like to start out rich and work my way back. I'm sort of a backwards guy anyhow.

Doesn't sound backwards to me. 8) Sounds like a fun ride, good thread.

[Anonymous]

As for carbs when my bike was stock 1075cc or even as a 1166 with cv 34 carbs with pods she go lean in the upper gears at wot. Anything smaller than a 140 mains jets she hit a wall.

Hey Jake,

What altitude are you running at? I am at 3400ft. and have almost exactly the same set up as you describe (pods, stock carbs, OEM needles, Kerker 4-1 pipe) and I am just about to start the jetting ritual for the pods. I was at 130 mains with the airbox modded so I was going to step up to 135's as a first guess. Perhaps I should jump to the 140's for my first try instead? Maybe I will split the difference and try 137.5's instead. :? What did you do with the needles? I am in the 3rd of 5 grooves at the moment and figure to try it there and see how it runs before I change anything else.

Mark

[RacingJake]

G-Day Mark

I'am at 1700 feet here. Was your bike running lean with 130's ?

If you tried raising the needles all the way and re-adjusting air/fuel screws and it's still lean then I'd go with bigger mains. Not to sure about your altitude. But I'd try 140's Make sure your're using Mikuni jets cause DJ jets are smaller. As for the oem needles on mine there's no adjustment grooves so I just leave them alone and just use bigger jets. I was using the DJ kit jet's and needles at one time but it didn't work out so I put the oem needles back in and use just mikuni jets

Don't you just love trying to get the c-clip's out to adjust them needles. I'd rather pull the bowl's off a 100 times than to mess with the needles At one time I was going to just leave that clip off since the spring pushes down on the plastic hat anyways.

Let's us know
Jake

[Nerobro]

popping the clips off is relitively easy... if you know the trick. press the open side of the clip against the side of a screwdriver, and it will pop halfway off. Then just be carefull removing it the rest of the way so they don't fly off. :-)

[RacingJake]

What scared me most was poking a hole in the diaphragm or bending the needle if I slipped on a cold dark night at the track.

[Anonymous]

I'am at 1700 feet here. Was your bike running lean with 130's ?

Nope. It seemed to run fine, with just a HINT of a lean surge at part throttle cruising. The bike was dyno tuned by a local shop after the pipe and airbox mods were done and it seemed good in the limited mileage I got on it last year.

If you tried raising the needles all the way and re-adjusting air/fuel screws and it's still lean then I'd go with bigger mains. Not to sure about your altitude. But I'd try 140's Make sure your're using Mikuni jets cause DJ jets are smaller. As for the oem needles on mine there's no adjustment grooves so I just leave them alone and just use bigger jets.

I figure to step up at least a couple sizes as a starting point just to avoid being lean. Your altitude is not so far off mine to seriously affect things. I am sure I will be the same or maybe one step smaller on jets for the difference.

Thanks for the help, Jake.


Mark

[RacingJake]

If it's not going lean at WOT, then i'd leave the jets alone, (well maybe go up one size for good measure) and raise the needle one notch and see if it corrects the problem or even try one size bigger on the pilot jets.

[RacingJake]

The 1150 studs showed up today, and I'm not taking about me cause I'm the 1395 stud :? Just waiting on those 1150 valve cover bolts and seals then it's time to swap heads. Who's know's maybe by next Friday it will be ready for an ops check.

This Friday might just be the last time I'm in 6.s.......I hope.

[RacingJake]

Last night made 11 runs, bike was running good. The air was bad so I just ran a bunch of 6.3's. Even qualified for the quick 16 too. In first round eliminations it me against our fastest bike Belitz. I dial in 6.40 and run 6.41, Belitz dial in a 5.42 runs 5.58 so I'm off to the 2nd round.

Now I'm in the land of Dragster's so whats a guy to do.... red light... crap .
I must of had superman eye's 8O cause I had 1.40 in the box and red lite with 0.4795.

I think I need to play with the clutch some more. May not be slipping enough off the line and causing the rear tire to slip to much causing inconsistency. But it always fun go up aganist those guys and gals .

[Anonymous]

Congrats man!
sounds like your getting on top of your game
I won't be back into the scene until '06

peace,
Ron

[RacingJake]

Congrats man!
sounds like your getting on top of your game
I won't be back into the scene until '06

peace,
Ron

Thanks Ron

And why so long??

[RacingJake]

Well most of the parts showed up today. just missing one of those stinking 1150 cam cover bolts. Parts guy said it's still on order.

Anyhow the 1150 head will be on by this Fridays test and tune and if the bolt is still a no show then I'll just use a bolt with a flat washer and seal.

Will see what it can do.

[Doze]

Jake, just as a sidebar to your goals, They had the first test and tune of the season here at Bonanza raceway in Walla Walla this last weekend. A guy ran a stretched GS, not sure what size engine, but he managed high 5's at 120mph in the 1/8th. Sounds like you're almost there. Doze.

[RacingJake]

120mph is pretty strong I'm thinking he may be running nitrous or a big block too :twisted:

I'm shooting for 110 to 115

I pulled the 1100 head off and the 1150 head is on top, you can see the port opennings are bigger. The ports have been cleaned up to get rid of the flashings inside. Every little bit helps.

I'm glad I didn't port my 1100 head cause the 1150 is already bigger to begin with. Best bet is to port the 1150 head if needed. Plus the intake valves are 1 mm bigger too.