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94 SA50 w/ Contesta and V8 Typhoon
Posted: Sun Sep 23, 2012 3:14 pm
by Mystic
My eve has been using too much gas so I figured it was time to boost my other ride. I ordered 2 minarelli 47mm head gaskets a few weeks ago to lower the compression from 155psi. Got the contesta kit installed with the v8 typhoon with the arreche 17.5mm carb and stock airbox jetting 25 pilot and 90 main short run temps stayed very low so far so good. About to take her for a few miles since I gotta do some yard work. I got the contesta used so it is already broken in so I dont really have to worry about heat cycles etc I only used 1 head gasket and it lowered the compression to around 130 which is ok for 93 octane since that is what i ran with my eve and 135psi. Only thing I really need now is some 8.44s I hate to run this with the stock gears but I dont have a choice right this minute just wont do a whole bunch of WOT runs

dont want to waste my money getting a set of 9.1s
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Sun Sep 23, 2012 8:04 pm
by Mystic
Took her at least 8 miles and the temps didnt get over 280 even up large hills and pulled strong

It was bubbly all through the throttle so I am gonna drop down to an 80 main and see how it runs then adjust the needle clip poistion as needed. I think the pilot is right and it didnt use all that much gas either

I realllllly like this arreche compared to the OKOs I am about ready to buy me another arreche for the Eve and sell the CT manifolds and OKO carbs lol they use too much gas and are leaky no matter how well you tune them. I may have to order an couple more mains so I can get it just right. I have 60 70 80 and 90, may get an 85 and 95 so I have some inbetweens. Not exactly sure how the arreche jets compare to the oko jets, I know the arreche size is based on flow rate and the keihin ones are based on the diameter of the hole
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Thu Sep 27, 2012 11:47 am
by Mystic
Been working at the lumber mill filling in for the past few days so I have been so sore and tired after work I didnt want to fool with anything hahha Got to the jetting this morning, first dropped down to 25 pilot and it seemed to run a little better on the bottom then changed the clip from the very top to the middle and it fell on its face so I changed the main to 80 with the clip in the middle and it ripppppsss

still a tiny bit bubbly right off throttle but not too worried about that since it will help the engine cool down after wot runs, rather it be a tad rich than lean right? going to take her for a ride to town today and see what my speeds and temps are and take a few pics. May need to drop my vari load down a bit since I am running 9gram weights but wont get to the CVT tuning till I get the jetting etc right. I have a few weight sets and some 1500 clutch springs and a 1500 contra. I sorta want to try 1000 rpm springs and 1200 contra but ya use what ya got
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Thu Sep 27, 2012 12:06 pm
by LMH
When I go for the first couple maiden voyages I always pack a special tool kit, included are flat head screw driver, 2 phillips, 8mm,10mm,12mm, spark plug sockets, 1/4 drive ratchet, 17mm wrench for drain screw on the carb, 2 plugs, quart of yamalube, and my assortment of jets.
I noticed with my 19 mm arechi it was always "bubbly" if I wanted to hit a good top speed, not sure about the 17.5 but I bet its near the same. You should upgrade your reeds to boyesen dual stage reeds, I forget which ones worked for it. It was either 740 or 708, I think I used 740 on the stock 89 sa50 and 708 In the CT, or vice versa. Too long ago to remember now ha. With the dual stages you can down jet the pilot a little more usually and get better bottom while still getting great top.
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Thu Sep 27, 2012 1:09 pm
by Mystic
kewl thanks. I have daytona carbon fiber reeds and I always carry a tool kit and an assortment of jets wherever I go. I think the main thing with the arreche is it needs a different emulsion tube than what comes with it. Even the pilot and mains it comes with arent right for stock. Considering the one I have is for the Honda Vision I can understand that since the af05e variated motor used the larger main than the stock 94-01 sa50. The 25 pilot it comes with is so rich it spits fuel back into the vacuum line. Once I change the stock gears to 8.44s I will try to eliminate the bubble just off idle. After a few rides and the gear change I may go back to the stock pipe so I get good take off and a little better fuel consumption if it doesnt affect the performance up top
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Thu Sep 27, 2012 6:09 pm
by LMH
Gotta love the trial and error.
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Thu Sep 27, 2012 11:09 pm
by sleeperscoot
There are a few tricks you can do to upgrade your contessa bore, for bottom end, use a trans washer from a 94-96 elite-s puy iy between the boss & ramp, you can also cut the piston skirts to match the corsa and usa a top ring from a corsa, sorry i son't have specs foe cutting the skirts.
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Fri Sep 28, 2012 5:59 pm
by Mystic
I moved hte needle clip all the way up today and it cleaned up the bottom but now I reach max speed about 1/2throttle and the temps get higher than I want in that range so I think I am gonna order a different emulsion tube and needle and see what that does plus I am sure I will get some more top end when the 8.44s get here

temps reached 345 up hills which isnt too bad and around 320 from 1/8th to 1/2 but I like the temps to stay around 300-315 in that area. I imagine with the gears the temps might be lower since the motor wont have to turn the same RPMs
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Fri Oct 12, 2012 8:14 am
by Mystic
Finally got all my parts in, the 103 atomizer and 01 needle for arreche came in the mail yesterday and the 8.44s the day before. Only thing is it is supposed to rain today

If it doesnt I gotta take it to my uncle's shop cause the last time I tried to get the rear wheel off the nut was stuck and my strongest air impact wouldnt even touch it lol then to the machine shop down the road to get them to press the gears, last time they only charged me 5 bucks
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Fri Oct 12, 2012 8:33 am
by LMH
5 bucks is a steal, may as well be paying in dollhairs. Bring them lunch next time as a tip lol.
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Fri Oct 12, 2012 8:44 am
by Mystic
Eh this is a very small town so everyone knows everyone else. All Guys, has is a post office, machine shop and a family restauraunt that opens 2 nights a week lol Knowing those guys down there I would be better off taking them a 6 pack of beer instead of money or food

Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Fri Oct 12, 2012 10:18 am
by LMH
True that, no one can turn down a cold 6 pack. Are you near Pigeon Forge? I have a condo out there at the base of the smokeys. When I first moved to the US I was in Lake Washington area outside of Seattle and bought a condo outside of Gatlinburg in Pigeon Forge. Now Im landlocked more than Ive ever been. When I first bought into Tn there was literally the highway, 2 "diners" which claimed to have the worlds largest pancakes, both of them held the claim, a drag strip, and Dolly World. At this point I have no idea how I ended up there but now looking back Im glad I did. Small towns are the best in Tn, especially near the mountains.
Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Fri Oct 12, 2012 7:05 pm
by Mystic
NO I am 100 miles east of memphis, gatlinburg is about 600 miles east of me lol I love pigeon forge and gatlinburg but I wouldnt want to live there, with all the tourism the price of stuff is outrageous heck 5 bucks to park sucks lol There are some really nice condos between gatlinburg and pigeon forge that sit on the sides of the mountains that I really like. We rent one out for a few days every couple of years. The best thing about staying there is about a mile or 2 after you pull off the interstate toward pigeon forge they have the best winery

Mountain Valley I think is the name of it they have an awesome mixed berry wine that I cant find anywhere else that tastes that good. I think its in Sevierville, not much else there but the wine is killer

Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Fri Oct 19, 2012 7:50 pm
by Mystic
FInally got the time to take my engine off and had the ruima 8.44 gears pressed on today

I ordered a 103 atomizer and 01 needle from racingplanet for my arreche carb. Apparently the atomizer is NOT universal as the ad said. For one it was too short, the top of it didnt even stick up into the carb like it was supposed to and didnt have any holes in it. The 105 that was in the carb was 2 pieces and had a hole on each side. Maybe since the arreche is for a vision and they probably dont make it anymore the atomizer is for the newer arreche carbs who knows. The needle fit though and I was able to put it in the middle instead of all the way lean and it seems to run good on the 1 test drive I took it on. Anyone by chance know approximately how fast an elite is traveling when the speedo needle completely disappears behind the housing????

Re: 94 SA50 w/ Contesta and V8 Typhoon
Posted: Sun Oct 21, 2012 11:01 am
by Mystic
Welp I just put my ruima vari on with 7g rollers since I was using a stock vari with SEF ramp and 9g. I figured with the v8 pipe and the tallers gears and stock contra it could stand lighter weights for take off. Will ride a loop here shortly when it warms up a little more and see how the over all accel is and maybe a top speed run if the CHT temps are good

May put in the 1.5k contra and 9g weights later if I dont like how it accels since the stock spring is getting a little weak. Plus the ruima vari is a lot lighter than stock. will need to check my belt ride height at some point. A side not these 8.44 helical cut gears are sure noisey
