Should i break it in?

[SavageSSBEAST]

I rebuilt a Lrp .28 Spec 3 that a friend gave me i guess the piston just wore out the sleeve was fine i could just about push the whole piston through the sleeve. I bought a Lrp .28 Spec 2 of eBay a while ago that came with extra piston and sleeve that were already used so i used just the piston on the spec 3 it has really good compression. The truck now runs like a raped ape first time i got to mess with it for a while without trying to keep it running. Only thing i did was let it idle for a tank with a little bit of throttle. But since i rebuilt the motor I'm wondering if should still break in the motor?

 

[oregonmud]

I would say yes. Since your wearing a different piston into a different sleeve.

 

[maximusraylius]

i say if it feels new and has alot of top end pinch still break it in like its new if its well used but gots good compresion just run it ... maybe run it easy for several tanks first so it don't snap the pin off the con rod..if it has good pinch still..

 

[Shaun]

I'm no engine expert but i would have to say yes it would be a good idea to go through break in again.

 

[Fx]

If it were me, I would heat cycle it for 1 tanks then take it easy for the next 3 tanks.

 

[Purenitro]

That's an old trick if you have multiples of the same engine, once one dies, take a different piston that fits a little better and use it. You should take it easy for the first little while to let the new piston seat itself into the sleeve, as long as there isn't a pile of pinch you could probably go for performance after a 1/4 gallon.

 

[MikeK1981]

I agree at least go easy for a couple tanks. I know on bigger cars the piston and sleeve need to wear in together so when they put new pistons in an engine they scour the sleeve with a fine sanding tool, I forgot the term for this process but it allows the new piston the seat better with the sleeve, I would imagine our small nitros would benefit from from "re-seating" time as well

 

[MikeK1981]

whoops, looks like purenitro posted while I was typing LOL!

 

[Pope]

When in doubt break it in.

 

[SavageSSBEAST]

OK thanks guys ill leave the settings at stock and take it easy for a few tanks. Now since this is the best motor that has ran in this truck what can i do to keep it running this way? Like keeping it a BDC. Also i had HPI send me a SF-5 servo the guy said he sent it out 6 days ago when do you think ill receive it ill and will it come through the mail or FedEx?

 

[MikeK1981]

It will be Fed Ex and HPI will give you a tracking number if you ask them for it. They are in southern california so depending on how he sent it the time for delivery will vary.

 

[Pope]

takes five days for me to get stuff from hpi here in NJ. Always fedex home delievery.

 

[SavageSSBEAST]

Just found it at the front door thanks!