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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 03-05-2009, 05:13 PM   #121
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Wrc has actually ordered a set for me from Mazda Motorsport. My hats off to him.

mrgoodwrench has done just an immaculant job at testing these parts. This guy is going to be my official tester if he wants it. Seriously standing novation for the abuse he put on what I sent him. Multiple installs and removals, solid mechanical knowledge. Couldn't ask for someone easier to work with.

The first reports back are that the uppercam gears work great. No slip on a supercharged 260 whp 230wtq miata at 7800 RPM.

He did have problems with the lower cam gear parts, but I think its because it was used on a supercharged car instead of a NA or turbo car. They held up fine, but he said there were some vibrations from them. I believe they were flexing too much do to the supercharger pulley and tension. I'm going to redesign them, and do an indepth resonance analysis to see whats going on.
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Old 03-19-2009, 09:45 PM   #122
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Bump (:

Any updates Travis?
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Old 03-19-2009, 09:53 PM   #123
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I've been waiting to hear back one more report from Dr. Goodwrench.

If you want the aluminum versions I'm comfortable with selling those now. The carbons we're still working on the best way to manufacture them. We've got the strength 100%, but the time it takes to make them is still a little long for production. We're afraid we'd be on backorder. We know what to do to get the carbon version to a reasonable level, we just haven't gone there yet.
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Old 03-23-2009, 09:29 PM   #124
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Quote:
Originally Posted by TravisR View Post
Thanks for compliment on the parts I appreciate it!

As far as fasteners, aluminum is just too wimpy. With three stud/nut sets I want to make sure I've got a great high strength fastener in there that will hold up to thousands of tightenings no problem. The setups come stock with wavelocks, and the carbon series will have an additional washer ontop of the wavelocks to distribute the load better.

Right now I'm looking at 30 dollar a piece for titaniums studs 1 inch long. Yea right! I'll see how much they are to make in house and get back to you.
What about a compromise? Is the only problem with aluminum fasteners the longevity of fastenings? If so, sell extra fasteners and tell people not to torque each set more than x amount of times.

Possible? I mean, fasteners don't need to be bullet proof, they're just fasteners. Look at head bolts for ***** sake.

Anyway, just an idea to shave weight, but not kill your pricepoint.
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Old 03-24-2009, 01:24 AM   #125
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oilstain u are very flawed trust me hearing ur harmonic balancer hit the highway on the way to work is not fun. Fastener failures suck *****. Travis this stuff looks good man I wish i had seen this thread earlier I woulda jumped in to help u. I still will if you need any help lemme know I am just west of etown.
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Old 03-31-2009, 09:12 PM   #126
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they look tasty, but if the cam pulleys were not carbon and had more than 3 bolts, i'd have a kit but would want alternator + water pump pulley too.

thanks for showing us these
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Old 03-31-2009, 09:16 PM   #127
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ETA for full NB kit (Carbon or Al)? Block is off to the builder this week and he'll be assembling in about 3 weeks.....
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Old 03-31-2009, 11:45 PM   #128
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Quote:
Originally Posted by magnamx-5 View Post
oilstain u are very flawed trust me hearing ur harmonic balancer hit the highway on the way to work is not fun. Fastener failures suck *****. Travis this stuff looks good man I wish i had seen this thread earlier I woulda jumped in to help u. I still will if you need any help lemme know I am just west of etown.
I didn't even notice you had posted. Thanks for the offer I'll let you know.

Quote:
ETA for full NB kit (Carbon or Al)? Block is off to the builder this week and he'll be assembling in about 3 weeks
I'll have it done by then, no worries!
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Old 04-09-2009, 04:48 PM   #129
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Aluminum Cam Gears ready to go at 99$ shipped a piece. These are the lightest cam gears out there, and are meant to be a bridge between performance and value of the carbon based units which will be $139 a piece. These fit 89-97 both gears, 99-05 exhaust gears. The 99-00 intake gears are coming soon.

Official Thread Here!
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Old 04-09-2009, 05:27 PM   #130
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in for media blast finish.

except i'm waiting to see the carbon duh.
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Old 04-09-2009, 07:25 PM   #131
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you'd probably want those timing marks to be as clear and deep as possible, media blast might make them harder to read.
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Old 04-13-2009, 01:53 PM   #132
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Good lord that's beautiful. If I knew what motor I would be running, I'd pick one up. :-)
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Old 06-08-2009, 11:52 AM   #133
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bump for update on the carbon fiber deliciousness. you have a schedule yet travis?
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Old 06-08-2009, 10:24 PM   #134
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Once we get the trigger system tested we'll be ready to finish up the line with Carbon Fiber units. Not sure on release time yet it all kind of depends if our first attempt at triggering properly is good.
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Old 11-26-2009, 05:52 PM   #135
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update please for the carbon gears and also for the 99-00 miatas. willing to pay and test if need be.
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Old 11-29-2009, 05:22 PM   #136
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im not even gonna read this whole thread, the first few post will do. while this all looks very very nice, my hat off to you on the machining. but this is typical engineering retardation

stop running your ******* numbers and use some common sense. who cares how many bolts you need to tighten. better safe then sorry, if your running some high lift cams with close piston to valve clearence and that thing slips. WHAM!

all engineers care about is numbers and simulation ..... lets look at apollo 1

i can understand the lower parts, my ati balancer comes with aluminum timing belt cog. i dont know if i would trust aluminum holding the balancer on even if it is 7075. did you helicoil the threads?? maybe titanium would be a better option

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Old 11-29-2009, 05:42 PM   #137
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Now, what I'd like to see is a 36-1 or 60-2 timing wheel hub and a VR sensor mount...

just saying.

Vishnu never got back to me :(
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Old 11-29-2009, 10:54 PM   #138
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This thread again.....
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Old 11-30-2009, 02:03 AM   #139
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Quote:
Originally Posted by ctdrftna View Post
im not even gonna read this whole thread, the first few post will do. while this all looks very very nice, my hat off to you on the machining. but this is typical engineering retardation

stop running your ******* numbers and use some common sense. who cares how many bolts you need to tighten. better safe then sorry, if your running some high lift cams with close piston to valve clearence and that thing slips. WHAM!

all engineers care about is numbers and simulation ..... lets look at apollo 1

i can understand the lower parts, my ati balancer comes with aluminum timing belt cog. i dont know if i would trust aluminum holding the balancer on even if it is 7075. did you helicoil the threads?? maybe titanium would be a better option
good luck with your personal design of 30 bolt solid block of steel cam gears. I'm sure they will be very strong.
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Old 11-30-2009, 06:36 AM   #140
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no im more then happy with my fidanza's . no sence in reinventing the wheel.
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