Valve head
1 Attachment(s)
I have been looking at the BBK and want to order a largrer (than stock) valve head and all that I see have this extra tab (on corner) on them.
Here is my valve head http://www.buggymasters.com/forum/at...1&d=1383481037 This one has that extra tab http://www.ebay.com/itm/SCOOTER-150C...item27d954e954 This one also has it. http://www.sycpowersports.com/index....id=66&incid=29 This one DOES NOT have it ( oem maybe?) http://knmparts.com/Cylinder-Head-w-...-GY6-150cc.htm My question is will these larger valve heads work with my set up? Will that extra tab not matter as long as gasket seal is there? will 4 bolts still line up?:confused: |
I don't think it will be a problem, it is likely put there for an bracket or accessory found on a scooter or other model engine, making it universal.
If you really want open that thing up, spring for the 4 valve head. Tom has the complete set up listed with all the goodies, but you would need to split the case to replace the timing chain. In this case, more is better. |
I saw where there is an additional bracket for scooters, hope that is the case. I would LOVE to order 4 valve head, but no case splitting yet until necessary, plus have to add longer timing chain , I believe. My birthday is coming up and my wife said her sister might by the valve head for me:hail: We will see. Until then just saving the money to get a quality one. either that or buy OEM and have it P&P. Leaning more towards the 58.5 valve head.
|
That looks like the egr provision. I would be concerned whether your cooling shrouds will fit with that head.
|
ahhh very clever thinking. Cooling (plastic) shrouds forgot about those. Well I ordered cylinder head already and those air fins seem longer than stock, opps....
Maybe shrouds will still fit. |
at 2nd glance, I am optimistic both will still fit.
|
Quote:
Quote:
|
True. Between 3 kids (one with special needs), wife, and saving for a newer house on a larger piece of property ( minimal 2 acres with woods close by:drive:). Every penny:swordfight: counts. It is so hard to make the wife understand the WORTH of the upgrades.
She says the buggy was running fine, then.... like always you take stuff apart and we don;t see it for a while:rolleyes:. This is only the first buggy. I plan on buying one just for her one day. What I buy her will be something needing work, so I can build it and customize it ( even if that means a pink buggy:laugh2:). |
58.5mm BB cylinder head arrived, with piston, boss pin, and gaskets.
looks nice. Only trouble I had was getting new rings into sleeve. I figured out it is easier to start inserting it on the work bench (just getting rings in past sleeve). Then with piston already in sleeve to just slip it over crank shaft and insert boss pin. Easy breezy. Now just waiting to order valve head, cam, and tensioner this weekend. Then I should be back in business to find appropriate jet size. |
The cooling shrouds will not fit over that head. I had to cut the tab off to put my shrouds back on. If you are going to spend the money on the Big Valve head you better have it P&P and shaved. Or you are wasting your money imo.
|
Quote:
|
I always take the old wrist pin and use it to push on the clips to make sure they are seated.
|
So compared to a stock head, there is no difference with a larger valve head? Am I getting a 58.5 larger head simply because I got BB cylinder? Can't I just notch the cooling shroud instead of tab on valve head?
Clips are seated, thanks for tips. |
not for sure if this is what THE TAB IS or not but some are EGR heads and some are NON-EGR. I may be wrong but check in description and see what it says.
|
Reaper I think you are right. I just wonder if my existing valve cover will still fit on those EGR heads. I will look around for a non egr head. Masteryota thinks it will be okay. Did you use same valve cover MB1134?
|
I have been shopping around for parts for mine and recognized the pics, I just thought I would reply to offer my assistance, have had no luck finding performance parts for mine because they do not make any lol. But good luck on your build
|
All of the larger valve heads have it, only oem ones don't...
|
After looking at the head again your stock valve cover will not fit on that head, the EGR head and non EGR are designed different, good news is new valve cover on E-bay is only like 25 bucks. The EGR will just be mainly for looks seein as how the head you have pictured the EGR port is not drilled. Hope this helps
|
http://www.scrappydogscooters.com/12...rformance.html
I did come across this 2/3 of the way down 59mm Big bore head I think this would work even with a 58.5 cylinder head huh... |
Quote:
|
Sorry, I thought you were talking about buying the big valve head from that website. The bigbore head is not the same as a big valve head and will not give you the gains a big valve would. You are better off getting Toms big valve head and having it P&P and shaved. That is the best bang for your buck. Period!
|
Just to clear up any confusion: you have a "cylinder" which is the bore that the piston is in, then you have a "cylinder head" which the valves are located in. I think most know what you are talking about but it can get confusing with the "cylinder head/valve head" names you are using.
|
Quote:
|
What are your opions with stainless steel valves and 12,000 valve springs ?
Too stiff for 155cc? |
So, after reading some threads on here by Slestak. I have determined stainless steel lighter and more durable. 12,000 rpm valve springs not needed.
|
Quote:
|
Quote:
|
okay, thanks for the clarification guys! I am mechanically inclined, but would be lost without this site. This site offers such an abundance of info and members willing to share knowledge that I could probably build a buggy from the chassis up.
Thanks everyone and thank you BUGGY Masters. Can't wait to get my ride running again. |
All times are GMT -5. The time now is 12:03 AM. |
Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.