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is it worth it to rebiuld my hyper .21 motor?

 
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ilovetats



Joined: 09 May 2012
Posts: 8
Location: toronto

PostPosted: Wed May 09, 2012 2:10 pm    Post subject: is it worth it to rebiuld my hyper .21 motor? Reply with quote

I have a hyper7 and the original engine lost compression so I put in a axial .28 spec 2s and I'm not happy with the new motor so I was wondering it is worth rebuilding the stock hyper .21 8 port motor?
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6sharky9



Joined: 15 May 2012
Posts: 18
Location: Alabama

PostPosted: Mon May 21, 2012 10:52 am    Post subject: Reply with quote

typically more higher end motors are rebuilt...the problem is most piston, rod and sleeve kits cost about 3/4 of the cost of just buying a new motor..if you need bearings also it usually costs more to rebuild it than buy a new one..considering the low cost of the hyper 8 i would just get another one in my opinion as opposed to a complete rebuild..i mentioned a rod also for the main reason the highest stress on a rod comes from the break in period..due to the tight pinch it puts alot of stress on the rod and they do tend to stretch a little and weaken..most dont figure changing the rod and thats caused damage to many motors making them not rebuildable anymore breaks..in my opinion i would just buy a new hyper .21...if youre doing the club races or just bashing around the hyper 4 port is a much better choice i think and it does give you more run time. im going to do a build up on a 3 port version hyper .21 that came in the earlier TQ7 RTR kits...My friend took his out to run a different motor and i got hold of it to do the project write up...price everything out and compare to a new motor..you may end up just buying a new motor...also if you do it will give you alot of spare parts should you need them for the same motor. usually the block,crank,head,carburetor etc..
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ilovetats



Joined: 09 May 2012
Posts: 8
Location: toronto

PostPosted: Wed May 23, 2012 8:36 am    Post subject: Reply with quote

Thanks for replying. That's what I was told and I was talked into getting a axial .28 which I later found out its usually for rock crowlers! I hate not knowing. I guess I will just use the old .21 as practice and experience
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Ben Giles



Joined: 31 Aug 2008
Posts: 22
Location: Il.

PostPosted: Fri May 25, 2012 8:29 am    Post subject: Reply with quote

do you want to sell the .28 motor I can use it.

Ben Giles
Qsac10@sbcglobal.net
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ilovetats



Joined: 09 May 2012
Posts: 8
Location: toronto

PostPosted: Fri May 25, 2012 8:51 am    Post subject: Reply with quote

I live in canada so for what I would sell it for u my as well buy a new one. I paid $159.99 for it
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