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05-15-2003, 01:02 AM
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Join Date: 04-28-2003
Location: southern Il
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onfa hyper.21 8 port race engine
I need some info on this. is it good one in the back yard or is it ment to be on the track. and does it fit on a savage and will the electric starter work?
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05-16-2003, 02:12 PM
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Join Date: 01-11-2002
Location: Illinois
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I know that ace-hobbies sells a special flywheel clutch setup just for the savage for this motor so my guess is it will fit. I have used the regular hyper .21 and can say with confidance that it is a pretty good motor with a very steady idle. I didn't use it in a savage though.
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05-25-2003, 03:40 PM
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Join Date: 07-25-2001
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My brother and I both bought 8-port Hyper 21 engines. Mines is the standard version and his is the race engine. The internal differences that we could see were that the crank was fatter and the main bearing and block are appropriately sized for it. The piston/sleeve, connecting rod, and carb are all exactly the same. Another key difference is the fact that his engine came only as a non-pullstart while mines was a pullstart. I've since converted mines into a non-pullstart engine (really easy to do and it only cost $9) but have not run mines. Oh, his has a nicer cooling head, too.
If you do get the 8-port race engine for your Savage you will find that you will not be able to start it because the Savage requires a pullstart engine or some way to start it without access to the flywheel. You could always try to find someone like me with a brand new starter assembly for a Hyper 21 engine who is willing to sell it. Also, if you do get this engine, I would suggest that you install it into a different car, break it in using a bumpstart, then install it into your Savage. That is because the pullstart on the Hyper engines aren't all that strong and trying to start a green engine will almost always break the string or spring. Once broken in it should be fine.
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05-25-2003, 05:43 PM
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Join Date: 04-12-2002
Location: Berea Ohio
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I have dropped the Hyper 8 Port into my savage..
heres my little review
fit wise its a direct replacement.. Take the flywheel and clutch off the 21bb and put it on the 8 Port and install it..
Next step totally throw away there instructions on how to break it in.. Youll never start it and youll blow your damn shoulder out..
Go to ofna.com and enter there forums and read all the different ways people are breaking these things in..
I was so ready to just sell it cause I went by ofnas instructions..
Next have a blast this thing has balls.. It will wheelie on command, and your speed is increased alot as well as off the line punch..
I love it, would recommend to anyone.. Buy a better brake disc, and clutch shoes.. Cause you will eventually eat the HPI stock stuff up...
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05-25-2003, 05:45 PM
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Join Date: 04-12-2002
Location: Berea Ohio
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p.s. I bash
I have no other option, no where to race..
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