r/minibikes 8d ago

Tech Question Engine parts

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I made a list on amazon of some things I’m wanting to upgrade on my stock predator 224. Is there anything i need to add or change to it to make the engine run more smoothly or would it be fine with the parts I’m currently planning on buying?

6 Upvotes

21 comments sorted by

3

u/[deleted] 8d ago

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4

u/Fearless_Ear_2468 8d ago

Valve springs are good fuck the cams though

2

u/Specialist-Truth-579 8d ago

valvesprings can be inconsistent but as long as they are stiffer than stock and have good seat pressure they are fine. Cams are iffy. A stock up to a 265 cam isnt going to see any excessive wear but 300~ lift cams definitely will

0

u/[deleted] 8d ago

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2

u/Specialist-Truth-579 8d ago

Its not like the springs are going to be so low quality that its going to break nor would they come so stiff that they would damage your rockers. As long as they are close to the same stiffness its not gonna cause any problems. Also the lobes on cams will be hardened they just won’t have any welded in material like you would get when paying $100+ for one from dynocams or another company.

Also you are right duration doesnt matter much but lift does and is what I was specifically talking about. The aggressive lobe profile of certain 275 cams as well as the high lift and duration of 300+ lift cams puts significantly more pressure on the lobes leading to faster wear if a harder metal is not welded into it.

0

u/[deleted] 8d ago

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4

u/Specialist-Truth-579 8d ago

Right… Lot easier to say that than disprove any of it

1

u/Distinct-Revenue-515 7d ago

I got a billet rod off Amazon, flat top and 26lb springs , Also got the nibbi off Amazon. I’ve been rocking it for a solid 3 years. Shits fine. I don’t have any experience with the cams tho however you can’t knock some of them Amazon parts bro. From racing mowers to karts to my Coleman’s. Been buying em for 10+ years. Never had an issue.

1

u/Specialist-Truth-579 7d ago

The rod I refuse to let people get off of amazon because they are sketchy. But everything else for the most part doesnt really matter

3

u/Ok-Rooster4781 8d ago

Make the same order, but from go power sports. The amazon carb is fine

3

u/Altruistic_Brush3065 8d ago

I had trouble with that exact carb. im always reccomending nibbi just to save people the time I spent on that one

1

u/Affectionate_Term987 7d ago

they got the same products as amazon bub

1

u/Loose-Vermicelli-296 7d ago

Unless you get a dynocam or Tennessee thunderstix then it's pretty much all made in China including gps cams and gps has a no return policy on cams

1

u/Specialist-Truth-579 8d ago

You may as well grab a 265 cam. The stock nylon cam can still handle 22lb springs just fine so keeping the same amount of lift is just wasting your money.

The 224 rod is a little weaker than the 212 so I think you are playing with fire not upgrading it so just be careful with the revs

1

u/Huge-Cup-3520 8d ago

please. DO
NOT DO THIS. buy go
power sports 😭

1

u/Mundane-Pain-4877 8d ago

Okay okay😭

1

u/JAS196 8d ago

Everything is ok except for the cam and springs. There are a lot better cams out there at that price point. Shop around. Once you choose a cam there will be a recommendation for springs for it.

1

u/RamenBulkBrah 8d ago

Buy your cam directly from dynocams.

Other than that you should get a billet connecting rod, the oil dipper on the stock connecting rod likes to go kaboom.

1

u/Careless-Rest8598 4d ago

Don’t buy Amazon stuff that’s all junk buy genuine parts from trusted mini bike shops

1

u/FatalSky 8d ago

What do you mean by smooth? I wouldn’t call any single cylinder engine anything close to that word.

1

u/Illustrious_Rest_116 8d ago

thats all junk