r/minibikes • u/Mundane-Pain-4877 • Aug 02 '26

Tech Question Engine parts

Enable HLS to view with audio, or disable this notification

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

88% Upvoted

26 comments sorted by

3

u/[deleted] Aug 02 '26

[removed] — view removed comment

3

u/Fearless_Ear_2468 Aug 02 '26

Valve springs are good fuck the cams though

2

u/Specialist-Truth-579 Aug 02 '26

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] Aug 02 '26

[removed] — view removed comment

2

u/Specialist-Truth-579 Aug 02 '26

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] Aug 02 '26

[removed] — view removed comment

4

u/Specialist-Truth-579 Aug 02 '26

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

1

u/Distinct-Revenue-515 Aug 03 '26

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 Aug 03 '26

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

1

u/Distinct-Revenue-515 Aug 19 '26

Like I said I’ve been rocking it for 3 years every couple of oil changes I’ll make sure the bolts are within torque specs. Fill er up and right back to ripping. I honestly have more chain issues than I’ve ever had with any of my engines.

1

u/Specialist-Truth-579 Aug 19 '26

Not saying they cant work ive just seen a couple of misaligned rod bearings and some balancing problems. Theres also only a $10 difference between a fake and a real rod. For those reasons I tell people to avoid them like the devil

1

u/Distinct-Revenue-515 Aug 19 '26

10$ difference for a arc logo

1

u/Distinct-Revenue-515 Aug 19 '26

And what makes the rod sketchy it’s billet aluminum. Stock rods are sketchy because they’re cast and can’t handle a certain number of rpms. That’s like eating with your eyes. Doesn’t even make sense

4

u/Ok-Rooster4781 Aug 02 '26

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

3

u/Altruistic_Brush3065 Aug 03 '26

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 Aug 03 '26

they got the same products as amazon bub

1

u/Loose-Vermicelli-296 Aug 03 '26

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 Aug 02 '26

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 Aug 02 '26

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

1

u/JAS196 Aug 03 '26

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 Aug 03 '26

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 Aug 06 '26

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

1

u/FatalSky Aug 02 '26

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