Author Topic: HPI ignition install  (Read 15212 times)

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Offline turtle

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HPI ignition install
« on: March 24, 2019, 10:21:06 AM »
I'm trying to install the HPI ignition on my 75 RD350. The instructions are very vague and my key areas of concern are the placement of the stator and setting the basic timing. I know M IN SC had a really good thread with pics on the old board. any chance we can get that again. thanks in advance.

Offline m in sc

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Re: HPI ignition install
« Reply #1 on: March 24, 2019, 03:17:24 PM »
actually... yes. I'm out on the bike right now, I'll be home later and post em :toot:

Offline turtle

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Re: HPI ignition install
« Reply #2 on: March 24, 2019, 07:22:44 PM »
thank you!!!!

Offline m in sc

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Re: HPI ignition install
« Reply #3 on: March 24, 2019, 10:07:21 PM »
its pretty straightforward.  look for the marks on the rotor, and time it with a light. i used a ball end allen to tighten the bolts on the gold plate so i could move it to time. don't forget to pull the steel pin out of the case at 7 o clockish. the pic should show enough to figure out how to orientate the plates. the line in the rotor is the trigger mark (not in pic but its scribed on the chrome outer rotor)



i hope this helps. its not much but its all i really have of it actually installed.









Offline turtle

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Re: HPI ignition install
« Reply #4 on: March 25, 2019, 05:58:14 AM »
thanks for the pic. so to be clear I'm using a timing light and not a dial indicator to set the timing. also did you apply green loctite to the crankshaft to prevent the rotor for possible movement?

Offline m in sc

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Re: HPI ignition install
« Reply #5 on: March 25, 2019, 08:43:47 AM »
yes i did. I used a light but you need to find TDC to install the rotor.

Offline turtle

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Re: HPI ignition install
« Reply #6 on: March 25, 2019, 01:29:30 PM »
makes more sense now. so the I found the 2 lines on the stator plate. one is 11 and the other is 1 o clock.  I'm assuming 11 o clock is cylinder 1. set piston 1 at tdc with a dial indicator then line up the rotor mark with the mark on the stator... sound about right??

Offline m in sc

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Re: HPI ignition install
« Reply #7 on: March 25, 2019, 01:50:37 PM »
thats (11) probably the firing mark. the single line i think was TDC

Offline quocle603

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Re: HPI ignition install
« Reply #8 on: April 05, 2019, 02:22:29 PM »
How much lighter is the HPI compared to the stock magneto?
Do not underestimate the power of a two-stroke.

1975 Yamaha RD350 (modified), 1973 Yamaha RD350 (stock), 1971 Suzuki T500, 1981 Yamaha XS650 HS2, 1982 Honda MB5, 1980 Puch Maxi, 1979 Puch Magnum, 1993 Tomos Bullet, 2003 Malaguti Firefox F15 LC

Offline m in sc

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Re: HPI ignition install
« Reply #9 on: April 05, 2019, 02:33:54 PM »


if i remember corectly was almost a 4 lbs difference (this included cdi box and all wiring). it was insane.

Offline quocle603

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Re: HPI ignition install
« Reply #10 on: April 06, 2019, 08:13:21 AM »
Wow. That must be a load off of the crank. Can't wait until they are back in stock again by treats. I am assuming you don't need a battery to run this kit...similar to the MZB/POWERDYNAMO.
Do not underestimate the power of a two-stroke.

1975 Yamaha RD350 (modified), 1973 Yamaha RD350 (stock), 1971 Suzuki T500, 1981 Yamaha XS650 HS2, 1982 Honda MB5, 1980 Puch Maxi, 1979 Puch Magnum, 1993 Tomos Bullet, 2003 Malaguti Firefox F15 LC

Offline ~JM~

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Re: HPI ignition install
« Reply #11 on: April 06, 2019, 10:42:21 AM »
Will this ignition power the lights?

Offline Seizer

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Re: HPI ignition install
« Reply #12 on: April 06, 2019, 12:39:57 PM »
Will this ignition power the lights?
I believe it’s rated at 60W output.

Offline quocle603

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Do not underestimate the power of a two-stroke.

1975 Yamaha RD350 (modified), 1973 Yamaha RD350 (stock), 1971 Suzuki T500, 1981 Yamaha XS650 HS2, 1982 Honda MB5, 1980 Puch Maxi, 1979 Puch Magnum, 1993 Tomos Bullet, 2003 Malaguti Firefox F15 LC

Offline Hawaii-Mike

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Re: HPI ignition install
« Reply #14 on: April 06, 2019, 07:10:56 PM »
Wow that's a nice system!