Very good engineer ❤

49ccScoot DIY tutorials are the real deals. simple,clear and easy to understand for a layman..

This tool, I got for about $15 on ebay. WOW! WAAAAY easier! Thank you! I was having a hell of a time using the tool int he previous video. Folks, get yourself this tool! Night and day difference!

I wasn't sure whether to pay for a head rebuild but you've given me the confidence to crack on so thank you for this video!

I just rebuilt my engine using this tool works awesome.

Thank you so much, I couldn't even imagine that John from Greece

very well done Sir, thank very much sir

Another great video.

Dude I tried for 3 days to get retainers back in. this tool worked the second time took 5 mikes and worked the first time on the other valve! I'm toasting a drink to you right now. thanks

thank you very helpful video im from phillippines

Nice very clear tutorial,tnx..hope your all content are this clear.

thank you sir

Thank you very much buddy

very easy thank sar

Thankkquu bro thankkquu..💗💗💖💖💖💕💕❤

Thanks. For 40 years, I have done that with a deep well socket (about a 14mm) to "pop" the keepers. The installer can be made with a 1/4 drive deep socket inside a larger 3/8 drive deep well socket. Use a 2 inch hole saw to cut a 1/2 thick wooden plywood "puck" to hold the valves in place (instead of the rubber knob). Cost:free.

Perfect video thanks man

8yrs later and still very useful 👍

Fantastic “how too video”.

nice one bro thanks

Great Video. Thx for the tips. I'll be using method #2. Shop wanted 300$ to do the valve seals. So i may owe you 250

ohh wow that just makes things easier! awesome tool before that, I just use a deep socket and a "sorta hard" plastic sheet to keep the valve keeps aligned and fall into place when I push on the springs might take 1-3 tries but it works 🤷🏻‍♂️

Nice video

Should my springs be able to be compressed by hand on my 250cc dirtbike ? They seam VERY tight on intake and exhaust side , please let me know if there maybe to tight or needing to be replaced ?? Thanks!!!!!!

@49ccscoot

3 жыл бұрын

Probably not. Compressing valve springs by hand is generally only applicable on very small engines.

💪😎👍

I need one

This is clever. I wonder if a guy couldn't just use pvc and a plastic weighted hammer. A lawn mower is likely not going to break it. Otherwise, I have enough pipe. Pretty neat.

How are the valves keys actually holding the springs in? I can't wrap my head around it?

@49ccscoot

Жыл бұрын

Look up some pics of keepers and the ends of valves. You'll see that the valves have a groove and the keepers inside are designed to interact with that. The outsides are made at a taper.

Will this tool work for a riding mower valve spring?

@49ccscoot

5 жыл бұрын

TBH I'm not sure. If it won't, there's probably another out there that will.

Hey I have a question for you since you are very crafty with scooter work. If I buy a new cylinder head and new valves, do I need to cut the valve seats or lap them? The scooter I have is discontinued and they have no more fully assembled head left but they have a new bare head and new valves. It is a 2016 SYM HD200 EVO, 4 valve cylinder head. I would assume the valve seats and valves are machined by the manufaturer to have a perfect seal if they are new. Thanks!

@49ccscoot

6 ай бұрын

It would depend on exactly what you buy, but you shouldn't usually have to cut the seats. I'd lap them.

@lancejonesmusic

6 ай бұрын

It is an OEM from dealer cylinder jrad and OEM valves for my 2016 SYM HD 200i EVO.. ​@49ccscoot

@49ccscoot

6 ай бұрын

@@lancejonesmusic Should be ready to go as long as it's not a true bare casting. I'd still lap them, but it's not a must.

@lancejonesmusic

6 ай бұрын

@49ccscoot ok sounds good thanks!

@lancejonesmusic

6 ай бұрын

@@49ccscoot I forgot to ask. What lapping compound do you recommend?

on mine, a 125 jonway,2010, the valve springs have progressive pitch coils,they are not to be installed upside down, the coils are closer together on one end, looking now thru youtube to see how they go

@49ccscoot

Жыл бұрын

In general, the closer coils go toward the bottom with valve springs.

@josepeixoto3384

Жыл бұрын

@@49ccscoot Yes, they must, that is why they were wound like that in the first place; it has to do with their resonant frequencies and with valve,cam lobe and spring wear,and horsepower loss; lots to read about that, i just checked w/Dr Goog, lol And since i'm here, thanks again for your great videos.

Is it always better to put washer under the valve spring? Or just shave my retainer to prevent valve seal kiss?

@49ccscoot

3 жыл бұрын

If you start adding shims, it changes spring pressure and then you could also push to coil bind. In some popular applications, you can get offset keepers so you could put say a 0.030" shim under the spring and then use 0.030" offset keepers. If you're working on a scooter, that's not likely to be an option. A lot of people take them to a machine shop and get the guides machined for clearance.

@low9164

3 жыл бұрын

@@49ccscoot thank you im working on my 130cc bike

@low9164

3 жыл бұрын

Last question lol when i bring my piston to machine shop for valve pocket, can i just tell them that i use 6.8mm camshaft or do i have to bring the camshaft?

@49ccscoot

3 жыл бұрын

@@low9164 I would call the machine shop and ask them what they want to be sure. If you know all specs of diameter, position, depth, angle then they can do it with just the piston for sure but otherwise it's best to ask what they want. I know that with some of the GY6 and 139QMBs, the reliefs don't always match up exactly where they need to be.

Is that keeper placement only for this engine?

@49ccscoot

Жыл бұрын

That's how most keepers work.

Does this tool work on "shim under bucket" style valves?

@49ccscoot

Жыл бұрын

Once the bucket and shim are removed, it should.

@H-M-78

Жыл бұрын

@@49ccscoot just ordered one from china. Will try it on a Busa head I got on the bench. But the original idea was to try it with engine in the frame and compressed air to the sparkplug hole to hold the valves

wear can i get this tool let me know thank

@49ccscoot

7 жыл бұрын

I found it on eBay. Search for "GY6 valve tool".

What is the name and the make of the tool you used.

@49ccscoot

Жыл бұрын

It's some generic tool from eBay. You can search for "GY6 valve removal tool" on eBay and they will come up.

What do you call that special tool sir?

@49ccscoot

Жыл бұрын

It's some generic tool from eBay. You can search for "GY6 valve removal tool" on eBay and they will come up.

What's the eBay sellers name ?

How can I get one

@49ccscoot

3 жыл бұрын

If you search "GY6 valve removal tool" they should come up.

What is name of this tool sir

@49ccscoot

2 жыл бұрын

For the tool that I used in the video, I searched eBay for "GY6 valve spring tool". I don't see them on amazon, but the link below is a similar tool from a well known brand. amzn.to/3E5fHxd

What's the name of that tool?

@49ccscoot

3 жыл бұрын

amzn.to/37wZ28G (affiliate link)

Hi what is the name of this tools please thanks

@49ccscoot

2 жыл бұрын

For the tool that I used in the video, I searched eBay for "GY6 valve spring tool". I don't see them on amazon, but the link below is a similar tool from a well known brand. amzn.to/3E5fHxd

Thats not a plate, its a rod

You don't even need those tools you can easily just use sockets with a socket extension bar

What's the eBay sellers name ?

@tonylin127

8 жыл бұрын

+Mark Lee Giant_wave rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=11&pub=5575168747&toolid=10001&campid=5337857075&customid=&icep_store=giant_wave&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg