Jetting AGAIN! sorry

[AL P]

Hey guys, i just read about izz`es burn down scenario, and once again, I`m rediculessly paranoid about putting my pipes on. although he did the cylinder lift mod, vent tube, air box, cut heads, ect. he does have an 800, and lives in michigan, so our elevation would be the same. but i noticed he was running 150+ jets, yet burned down. not saying it was the jets, but.... anyway i also have PSI mod blaster, however thier 800 pipes, and have been planning on starting out with my stock 143.8 jets, which is way smaller than what he was running, so I just got to ask one more time. if these are totaly safe? I cant stress enough how much i cant afford to burn down, if that happen, I would be done for the season. I`d much rather foul plugs out real fast, and work my way down, than risk melting a piston. So if you guys dont mind, could you once again, tell me if starting out with my stock 800 jets is going to be safe for sure or not? Thanks AL P

One last thing, hey racer7x, if you happen to read this, can you give me some contact info for "cateater"? I had his phone number before, But I somehow misplaced it. Even an email address or something would help. Thanks

[YAMMIEGOD 3:16]

DUDE, YOU HAVE TWO SAFTEY OPTIONS HERE.
1. SIMPLY JET UP. ESPECIALLY WITH TODAYS JUNK GAS. STOCK 800 JETTING WITH BLASTERS WITH VERY INCOSISENT PREM IS THE CHANCE YOU TAKE.
2. OR RUN THE STOCK 800 JETTING WITH A 50/50 RACE GAS/PREM MIX.!! 3:16 (tony)

[3ft]

Al, I am in the same boat and didn't want to hijack izz's thread...(sorry to hear izz) I just put my PSI 750 quads on, and friday I am taking the day off to test. After hearing about the melt down, I too am worried. It seam that the 750 sled with the 750 PSI pipes has less info then the 800 and that you could jet down with the 800 w/800 quuads. The biggest jet size I have is a 143.8...that was what I was going to try. I figured that if they "dropped" (from the 140's) to 135 stock, that a 143.8 would be a big jump up for me....any body have thoughts on this as well...Sorry Al, not trying to bud in...Just have the same concerns as you....Hope you don't mnd if I ask a Question in your thread. 3ft

[AL P]

hey no problem 3FT.
The reason I`m hoping to get ahold of cateater, is because when i got the pipes from him, he gave me some 147.(.5s, i think they are), jets to go with the pipes, and they are way bigger than any jets that have been recomended to me by anyone? now, I dont remember if he said to run them if i was going to be doing the vent tube mod or whatever, So I`d like to get ahold of him, and double check what the plan was for these big 147 something jets? Now if i remember correctly, everyone else that are running psi quads, are running smaller than stock jets, I even called haucks, and they said to be safe start out with my stock 143.8s. So I dont really know what to do. I`m really stumped by izz`es burn down, and the fact that cateater gave me 147s to use?
Again, sorry guys for bringing this up so much, I really dont mean to iratate ya. I`m just so dang paranoid about buring down. I would just hate to go from my vmax running GREAT and the plugs looking perfectly tan, to a burnt down motor because of trying to improve a great running machine. BUT, on the other hand, I`m badly wanting to get these pipes on i keep reading about giving so much added HP, and sound too. ARG!!!

[AL P]

How about this, Could anyone with an 800. please post what mods you have done, what elavation, and what jets you re running with your psi mod blasters? I`d just like to see what the average jet size is? I realize elavation is going to play a big role, but maybe I`ll still be able toget a good idea from it. Thanks

[vmax41992]

hay al ive got bender quads on my sled if you want i can take my carbs off and take a look at mine but i have a 750 i dont know if it would help it might help for 3ft . if any one know if its the same or would be the same as psi let me know

[RDL 93 V-MAX4]

Hey AL,P I will send you a PM shortly about cat eater's email. I bought stuff off him in the past and he was awesome to deal with. I hope to see him again here on the site someday.

[RDL 93 V-MAX4]

AL,P

Again, sorry guys for bringing this up so much

I think post away bud were all here to try and help each other out. So don't worry about posting questions more than once. Sometimes I wish I had all the answers but I am learning too. Hope you guys can get your sleds jetting figured out. By making post well get the answer eventlually then it will help out others down the road.

[3ft]

Vmax41992, thanks...But I don't think that will help. I have the 8350 rpm psi quads made for the 750. I would think the pipes you have are the higher rpm 800 pipes. But thanks for the offer! I am going to try the 143.8's on friday and have alittle prayer before I make my runs. But if anybody has info...i'm all ears.

[YAMMIEGOD 3:16]

DUDE, XFACTOR HERE FOR YOU, 3 FT, OR ANYBODY RUNNING QUADS IS EITHER JET UP OR PREMIX RACE FUELWITH PUMP GAS. ACTUALLY RACE FUEL WILL LET YA GO OTHER WAY WITH JETTING. BUT I UNDERSTAND YOU GUYS DON,T WANT THAT. I RUN 135 MAINS WITH BLASTERS ON ICE WITH SHIM KIT IN MOTOR UP TO 1000 F.T. WITH 100 OCTANE. NO PROBLEMS OR ISSUES. !! 3:16 (tony)

[vmax4rules]

How about this, Could anyone with an 800. please post what mods you have done, what elavation, and what jets you re running with your psi mod blasters? I`d just like to see what the average jet size is? I realize elavation is going to play a big role, but maybe I`ll still be able toget a good idea from it. Thanks

135's with Dial a Jets set on #3 which equals approx 140 mains and this is too rich so I will be dropping down to 133.8's for this season.
Just remember the above jetting is used on a bone stock 96' 800 w/PSI quads for groomed trail riding with elevation between 500-1500'

[Skinner]

Hey guys, you have to remember that Izz also boosted his compression on top of the quads. Two complete different scenarios. Like Tony, I run 135 mains across the board for 660'. EGT's @ 30 degrees F = 1170 degrees F
Blended fuel 50/50 - 110/premium pump. No problemo, good fuel
Boost compression, better fuel.

You guys that just want to run quads with stock compression, should not have all the concerns that you would if you cut the heads, etc,,,,

I ran my max-4 for 4 years with quads, never fouled a plug or seized. I will look back in my notes tonight and post the jetting I used. Granted, the gas was a little better then. No matter what, you are still at the mercy of the pump and have no control over water content which is vital to your 2 strokes health

Skinner

[SRV540]

Well Al, I dont have PSI pipes but I do have Bender quads and I just jetted down to 145's from 157.5's wich were way to rich in the bottom end. and I am at around 2-300' elevation.

[vmax41992]

oh ok i thought you hade bender

[AL P]

Thanks for the offer though vmax41992.
AL P

[AL P]

I ran my max-4 for 4 years with quads, never fouled a plug or seized. I will look back in my notes tonight and post the jetting I used. Granted, the gas was a little better then. No matter what, you are still at the mercy of the pump and have no control over water content which is vital to your 2 strokes health

Skinner Skinner, have you had a chance to look up the jets you were using? If not, no big deal, just wondering?

Hey guys, thanks for all the replys!

I`m really leaning towards starting out with my stock 143.8s. I`m pretty confident in the gas I`ve been getting at my local station, and just to be safe, I could always get some 110 octane turbo blue that they sell down the road, and mix in a little. Then if I`m not looking too lean, I could slowly faze out the turbo blue, and keep an eye on the plugs. sound like a good plan?
Does this make any sence? Thanks. AL

[sid]

i have 95 800 with psi trailblasters and i have 150 mains in right now but they are lean below 20 degrees f so im gonna go up to 155 mains this is at sea level.

[YAMMIEGOD 3:16]

AL P, TURBO BLUE IS GOOD GAS. YOU WILL NOT HAVE ANY PROBLEMS USEING THAT STUFF WITH PSI QUADS. YOU THAN CAN RUN THE STOCK 800 JETTING, BUT DO NOT BACK OFF ON THE RACE GAS UNLESS YOU INCRESE JETTING. ANOTHER THING ALWAYS KEEP MIXTURE AT 50/50 OR 60/40. DON,T FILL YOUR TANK AND ADD 1/2 GALLON OF RACE GAS, THAT WILL NOT HELP YA. I WOULD GET A 6 GALLON CONTAINER AND MIX IT 3/3 OR NO LESS THAN 2/4. !! 3:16 (tony)