Super Jet how should i break in this new engine?

[jetpilot36]

getting my b pipe gaskets from jetmaniac today.gonna be on the water by tomorrow hopefully.just wondering what the best way to break in a new engine would be?i heard riding for about 5 min then letting it cool was necessary.then keep doing that for about a tank of gas.does that sound right.gonna be a pita.or should i just commit to nothing more than half throttle for a full tank? then im good?its a new crank,lamey ported 61x,r&d billett head,175 psi 83mm wiseco's and a TL ingnition.whats the best way to break her in?

 

[Idok]

some people heat cycle.......we surf riders typically ride in the bay for 2-3 minutes....check the engine compartment to be sure nothings loose, then ride as normal...

 

[Scubasteve4533]

I wish I could find the article that was done regarding motorcycle motor rebuilds. A guy did 3 different types of break in's on 3 identical motors and then tore them down to see which one was in the best condition. The report was that breaking it in the way you are going to ride it will seat the rings the best.

Cliffs: Make sure nothing is loose then ride it like you stole it

 

[tor*p*do]

use extra oil (32:1) for first 5 gallons
vary throttle a lot, no WOT runs first 2 tanks
then you should be good to go
(verify with your motor builder)
http://www.shopsbt.com/forum/t13960/

 

[Freakrider]

Get the expensive SBT break in oil....................................................................NOT !




I would not use full synthetic oil first tank...

 

[AtomicPunk]

Get the expensive SBT break in oil....................................................................NOT !




I would not use full synthetic oil first tank...

Very interesting.... would you fog it when done? :clown:


My vote is ride conservatively the first 15-20 minutes, then go ride the sucker.

 

[Freakrider]

Very interesting.... would you fog it when done? :clown:


Yep and in November fog the lawnmower while you're at it....:biggrin:

 

[Idok]

I fog my truck when I get to work usually too

 

[Freakrider]

I fog my truck when I get to work usually too

Wow ! you must go through lots of fogging oil...:silly:

 

[Tyler Zane]

jetworks recommends keeping the engine under good load (taking hard turns), varying the rpms, and no wot runs on the first 3 tanks. synthetic is also the only thing i have ran in my ski. its the oil with teflon i would stay away from for break in.

 

[tor*p*do]

I would not use full synthetic oil first tank...

new mercedes, lexus, cadillacs, etc come with synthetics in the crankcase from the factory
that said: stick to tcw3 and you are good!

 

[Freakrider]

new mercedes, lexus, cadillacs, etc come with synthetics in the crankcase from the factory
that said: stick to tcw3 and you are good!

there are bookoo articles on why full synthethic impedes the break in process...it is slicker than oil because molecules are identical.

 

[jetpilot36]

there are bookoo articles on why full synthethic impedes the break in process...it is slicker than oil because molecules are identical.

I've been using Lucas synthetic.not sure if its Teflon,tcw3 or what but that was on my old broken in 760.so no synthetic for break in?

 

[2XLR8]

What is the reasoning for running more oil during break in ?

 

[Penken]

heres what i learned.

use mineral oil. because you want some friction for the rings to seat against the cylinders.

keeping load on engine will give pressure to the rings to make em seat well against cylinder.

no wot runs. cause the rings havn´t seated, they will not transfer heat as good as when they have seated and this will make it run hot.

vary rmps. not run extended time on same rpms.

this is how i usualy ride so i just ride as normal. maybe take it out abit ride it by the statements above for a while then just go play.

some people say break it in as you will be riding it. i guess this will work. but it depends on how you ride. if all you do is wot runs i would not break it in this way.

 

[Billybo455]

i love these threads!!! scuba steve is right. take it out once and get it to operating temp. come back and make sure everything is fine with it. then beat the crap out of it. all the break in is for is if something comes loose in the motor they hope you're at a low rpm so it doesn't wipe the whole motor out. when i use to race dirt bikes we did a test on breaking motors in. we did a 1997 cr 250. we had two identicle top end sets. i don't remember the exact numbers, this was 13 years ago, but the top end that was broke in soft had almost 4 hp less then the other.

 

[jetpilot36]

heres what i learned.

use mineral oil. because you want some friction for the rings to seat against the cylinders.

keeping load on engine will give pressure to the rings to make em seat well against cylinder.

no wot runs. cause the rings havn´t seated, they will not transfer heat as good as when they have seated and this will make it run hot.

vary rmps. not run extended time on same rpms.

this is how i usualy ride so i just ride as normal. maybe take it out abit ride it by the statements above for a while then just go play.

some people say break it in as you will be riding it. i guess this will work. but it depends on how you ride. if all you do is wot runs i would not break it in this way.

So the synthetic Lucas I've been using is probably not good for the first few tanks?what kind of oil is mineral oil? Or can u tell me what brand to get?

 

[Freakrider]

A quart of this...XScream runs this mineral oil all the time...

http://www.westmarine.com/webapp/wc...hanintel_google&ci_src=14110944&ci_sku=441371

 

[jetpilot36]

A quart of this...XScream runs this mineral oil all the time...

http://www.westmarine.com/webapp/wc...hanintel_google&ci_src=14110944&ci_sku=441371

Oh.ok.I see that stuff on the shelf at oreillys all the time.I will pick up a quart or two.really? Xscream runs quicksilver?I use quicksilver when I can't afford yamalube or I forgot my oil and I gotta get a pint at the convienence store.but if that's what's recommended,then I will give it a try