780 SRX vs MachZ ?
- Thread starter 77-SRX
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DoktorC
Member
depends on the mach Z...lots of SRX's kill lots of mach Zs. The new ones I've seen are real slow and even the old ones rarely hang with the SRX in short distances...
Junior
New member
ya in a short distance even a stock bore SRX is capable of taking one, you gotta watch out for him out the big-end tho, but I agree with 86 that it depends on how they are set-up, alot of bigbores are set-up for trail cruising, while some are set-up for all out drags
DoktorC
Member
If the Mach is stock you'll kill it...my buddies stock (and over revving) SRX ran right with a modded (2k in engine mods) from bottom to top..not impressed with the Mach.
DoktorC
Member
He didn't beat it..but he didn't get beat. The guy was pissed and demanded to know what was done to the SRX. We're like..ummm it's totally stock..with stock clutching that is over revving. Any I've seen or heard of aren't fast. There are obviously exceptions to the rule (there's a guy near here with an 123mph F7..anythings possible) so you never know. All of the new Machs where slower then all of the SRXs in North Bay this past weekend..but I have no idea as to the state of tune of any of those sleds. I do know my buddy's sled is stock and they Mach Z guy claimed to have 2K in the engine of his...
Junior
New member
what kinda 2000' mphs where the machs touching man?
clutching
what all do you have for clutching besides just 8bu weights, the 8bu are great 500-660 weights, but they will fall off in the big end(800-1000' plus), unless you have a shallow finish helix, what all do you have to work with?
what all do you have for clutching besides just 8bu weights, the 8bu are great 500-660 weights, but they will fall off in the big end(800-1000' plus), unless you have a shallow finish helix, what all do you have to work with?
DoktorC
Member
I missed the 8bu part..but we still ran 120 with them in 2000'. It's obvious now that they were holding us back...we just didn't know back then....that was faster then all of the stockish Mach Z's from back then too.
Jr...Mach's were mid teens...SRXs high teens to twenties.
Jr...Mach's were mid teens...SRXs high teens to twenties.
77-SRX
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]what all do you have for clutching besides just 8bu weights, the 8bu are great 500-660 weights, but they will fall off in the big end(800-1000' plus), unless you have a shallow finish helix, what all do you have to work with?[
It's a Hauck setup with his springs and helix, not sure on the angle but I think it's 54/43 ? I did notice that the 8bu looked very lite in the tip compared to the stock weights. I don't mind giving up some MPH and backshift if it really rips on the ice!!
It's a Hauck setup with his springs and helix, not sure on the angle but I think it's 54/43 ? I did notice that the 8bu looked very lite in the tip compared to the stock weights. I don't mind giving up some MPH and backshift if it really rips on the ice!!
77srx...
If you have the hauck grey secondary spring, get a yamaha silver will be alot faster on topend then that hauck one, I had the hauck one and went to a yamaha silver and the gain was huge(grass racing), the green will be even faster then the silver, it all depends on your helix and how good the sled hooks on the ice or snow). That grey spring is way too much rate. What is the letter on your helix? Like I said before, the 8bu-00 is a great drag race weight, but if your gonna want to stay ahead for a distance of 1000', your gonna need a low finish angle helix and some 5 gram+ rivets in the tips of them 8bu's, you can also tap the holes with a 1/4"-28 tap and use threaded hardware fastners, I do it all the time, this way you can go more then the 4.5 yamaha or 5 gram hauck rivets. Nothing worse then to holeshot a guy and have him reel you in at the end because of topend(or lack of). I would'nt be so quick to count out the new mach z on top. They have been in the 120's mph pretty often if a guy does a bit of clutching to them. It's always easy to tell who keeps notes and who spends some time tuning, because they are the ones that win over 90 percent of the time!
If you have the hauck grey secondary spring, get a yamaha silver will be alot faster on topend then that hauck one, I had the hauck one and went to a yamaha silver and the gain was huge(grass racing), the green will be even faster then the silver, it all depends on your helix and how good the sled hooks on the ice or snow). That grey spring is way too much rate. What is the letter on your helix? Like I said before, the 8bu-00 is a great drag race weight, but if your gonna want to stay ahead for a distance of 1000', your gonna need a low finish angle helix and some 5 gram+ rivets in the tips of them 8bu's, you can also tap the holes with a 1/4"-28 tap and use threaded hardware fastners, I do it all the time, this way you can go more then the 4.5 yamaha or 5 gram hauck rivets. Nothing worse then to holeshot a guy and have him reel you in at the end because of topend(or lack of). I would'nt be so quick to count out the new mach z on top. They have been in the 120's mph pretty often if a guy does a bit of clutching to them. It's always easy to tell who keeps notes and who spends some time tuning, because they are the ones that win over 90 percent of the time!
77-SRX
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It's a "K" helix and the gray in the back. It felt like it had alot of rate compared to what I took out of the clutch and also a ton of torsional rate to it. I cant imagine how many pounds of pull it would take to turn that secondary against that spring. I'll give this setup a try and bring along another secondary spring to test also. I would hope to see 120+mph with any setup I end up with.....
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tripple_tripple01
New member
i ran an 01 mach z with crank shop pipes, heads cut, clutched and 196 studs, and i beat him from start to finish every time. im running the 8bu-00 weights, with a 52/42 helix. i got him out of the hole bad every time, (maybe 5 sleds). gonna race again tomorrow and im gonna video tape it for proof!!
redsnake3
New member
i have seen alot of machines beating stock mach 1000's. we race 660' and sometimes 1000'. i actually seen a sabercat 700 stock beat one and also the new venture 4 strokes.
here ya go
77srx, I got your pm, I didnt think you were gonna change anything by the sounds of your post, thats why I didnt post anything more. I would take that hauck silver secondary spring and throw it as far as you can in the next river/lake you come across, use a yamaha silver or green. Go to silver, then if you can, go to green. I like to run the 8bu-00 with 4.5 rivet in the tip and a .8 aluminum in the middle, maxx performance white spring, 50/40 helix with a silver or green secondary spring, if you want topend go with green, but if your really hooking hard you will need silver. If your motor makes alot of power, you may need a bit more then 4.5 in the tip, you can simply use a 1/4"-28 fine thread tap and run thru the holes on the weight, then you can use hardware fastners(bolts/nuts/washers) and set up the weights to anything you may need. I do always use a tiny drop of blue loc-tite on threaded stuff so it never comes loose. I would want to be at a 23/38 or a 22/38 gear ratio if you want to be 120mph. Get the sled to hit 8100rpm right out of the hole and let it build to 84-8500rpm on top. Keep notes on what happens, where,how and what, pay attention to the tach, let me know how it goes and we can tune from there, have fun!!
77srx, I got your pm, I didnt think you were gonna change anything by the sounds of your post, thats why I didnt post anything more. I would take that hauck silver secondary spring and throw it as far as you can in the next river/lake you come across, use a yamaha silver or green. Go to silver, then if you can, go to green. I like to run the 8bu-00 with 4.5 rivet in the tip and a .8 aluminum in the middle, maxx performance white spring, 50/40 helix with a silver or green secondary spring, if you want topend go with green, but if your really hooking hard you will need silver. If your motor makes alot of power, you may need a bit more then 4.5 in the tip, you can simply use a 1/4"-28 fine thread tap and run thru the holes on the weight, then you can use hardware fastners(bolts/nuts/washers) and set up the weights to anything you may need. I do always use a tiny drop of blue loc-tite on threaded stuff so it never comes loose. I would want to be at a 23/38 or a 22/38 gear ratio if you want to be 120mph. Get the sled to hit 8100rpm right out of the hole and let it build to 84-8500rpm on top. Keep notes on what happens, where,how and what, pay attention to the tach, let me know how it goes and we can tune from there, have fun!!
dstoehr
New member
Hey Tripple_Tripple, did you manage to get a video of laying the smack down on the Mach Z?!?!? I'd love to see that. Also, keep me posted on your results with your clutch tuning.
I've never raced a stock Mach Z, but raced a 2004 with pipes, porting, etc (claimed 180 hp) on loos-ish snow, and ran right beside him for about 7-800ft, then he pulled about 4 lengths on the next 7-800ft. Right after, I raced his buddy on a 05 1000 MZ (with claimed $2k in motor work), and he pulled me about 3-4 lengths on the first half, and then I stuck there for the rest of the run. I was happy considering what they said they had done to their sleds (if I were them, I wouldn't brag)!!!! They were very impressed with my SRX, which is over-revving btw
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I've never raced a stock Mach Z, but raced a 2004 with pipes, porting, etc (claimed 180 hp) on loos-ish snow, and ran right beside him for about 7-800ft, then he pulled about 4 lengths on the next 7-800ft. Right after, I raced his buddy on a 05 1000 MZ (with claimed $2k in motor work), and he pulled me about 3-4 lengths on the first half, and then I stuck there for the rest of the run. I was happy considering what they said they had done to their sleds (if I were them, I wouldn't brag)!!!! They were very impressed with my SRX, which is over-revving btw
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77-SRX
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FYI.... The 780 kit from Hauck is very stout. It's very quick on the ice with the #4 Hauck clutching however, after a few hundred miles the primary spring seems to have taken a "set". I lost about 150rpm of both engagement and shift rpm. It also started pulling the belt into the secondary shortly after the holeshot dopping the rpms down to about 7000. I did compensate somewhat by twisting up the secondary a bit more so the belt wouldn't slip in the secondary but the shift speed is still low, staying around 8100 rpm. I guess I'll need to lighten up the primary weights a little to straighten things out. I did loose a bit of top end speed over the stock motor with stock clutching. It does 105mph on the radar gun now. I don't think it will go much faster than that with 8bu weights? BTW I am beating the mighty Machz 1000 in 1000ft on the ice.