Intake manifolds

Hello, I have a question:
I am installing new intake manifolds and these did not come with separate gaskets. They are designed with a built in o-ring seal that obviously seals against the head when fully tighened down.

Should I use some sort of gasket material or high temp sealer with these to assist in the seal process? IF so, what do you recommend ?

Or should I just leave well enough alone and install as is ?

Thanks for the input.

 

Parts diagram shows that there are gaskets used. Personally I would spend the extra few bucks & get the gaskets, there only about $2~$3 each & thats pretty cheap insurance. you can get them from your local dealer or online.

 

They are supposed to have gaskets. I would run down to the auto parts store, get some gasket paper and cut them out. I would also get some antisieze and apply it to the bolts before torqueing them down. IF you haven't tried to remove the intake bolts yet I "highly" suggest dousing them with PB Blaster, Liquid Wrench or Seafoam Deep Creep. These buggers are known for breaking off in the cylinder head and leaving you with a bigger job than you wanted. A job that would require removing the cylinder head and taking it to the machine shop for repair.
There are other ways to repair the intakes without removing them and taking this risk.

 

MAX-X,
I realize this but I ordered these manifolds from a Yamaha Dealer and these are Genuine Yamaha units.
Ae you saying the gaskets have separate part numbers and need to be ordered as separate items?

 

Yes, They should have asked you if you needed the gaskets, but oh well. also what Blue Maxim stated is a viable option as well. In regards to the the bolts, did you already remove them? Blue Maxim couldn't have said it better. When I removed mine, the old bolts came out fine, but before re-assembly I went & bought new stainless steel bolts & coated them with Loctite 1600 degree antiseize just in case.

 

Yes. The gasket part# is :4G0-13556-00-00.

 

Your Mani folds have O ring Grooves? and O rings?? Assuming these all fit decently together.. that's a Whole different world better sealing ..than the mediocre Paper gaskets used to try and seal the intake manifolds.
Add nothing .. No Goo. .just insure all is clean then assemble.. O rings work V well indeed goo just messes 'em up..

 

I thought the only manifolds that needed the orings was for the turbo 650 seca?? If so what was the dealer that is selling thm..... Wait is this for the 650 motor?
Sean

 

It does not look like O-rings are indicated on the Parts Diagram ... just the gaskets ...

And, like the man said ... these are the easiest of all gaskets to make-up.

 

Danilo,
The manifold has an "0-ring" built into or formed into the sealing surface of the manifold. It is not a separate part from the manifold.
As you look at these manifolds, the "o-ring" does protrude farther out from the mating surface and it is obvious that when the manifold is tighened, this "o-ring" will seal against the head.
The reason I have been shying away from using any additional gasket is because it may have the potential of detracting from the "o-ring" type seal of the design.
Maybe I ended up with the 650 turbo manifolds.? I did a pre-fit and bolts holes and intake port line up perfectly.
BTW- the old (original) manifolds do not have this "o-ring" characteristic.
I figured this new manifold could be of a new design,

Am I crazy?

 

Not crazy.

The 900 has the same set-up. O-ring as an integral part of the Intake Manifold ... which has a Gasket installed over the O-ring ... and then bolted-up.

If you have all your Cap Screws out ... you should ditch them, right now!
Get rid of them with Extreme Prejudice! Substitute HARDENED or Stainless for those things, without thinking twice.

Do what the Racing Boy's do ... and add a thin smear of silicone sealant to both sides of the gasket.

Before you button-up the intakes ... apply some NeverSeize to the threads.

If you don't have those Cap Screws out of there ... here's the deal!

Those stock Cap Screws are cheap, soft steel. Loosening torque WILL twist a stuck cap Screw until it breaks-off.

The kicker is: ~~> IT WILL BREAK OFF EASIER THAN IT WILL BREAK LOOSE!

 

Rick,

What type of silicone should I use to "smear" a thin film on the gaskets?

Thanks everyone for the help, I do appreciate it.

 

I decided to make my own gaskets as recommended due to not wanting to wait for factory parts.
I will use a thin paper type material available at the local Auto parts store.
I will also use a high-temp rtv gasket sealant and apply a very thin film to both sides of the gasket.
I will also ditch the original bolts and use Stainless bolts and apply an anti-sieze compound.

Does anyone have any other tips or hints for the above?

Thanks

 

My 2 cents: I had the o-ring style boots on my old honda and they worked fine. I vouch for the fact that your bike, which is the same as mine, has the paper gaskets. If you ordered the boots from yamaha and they gave you ones with integrated o-rings, I would use those without hesitation as they are a better design. Just lube the o-rings with high temp lubricant like brake lube and put them on.

 

Thanks jkurtzb,
Man -now I'm really confused. I'm not sure what to do now. I guess I really can't go wrong either way I go, I am leaning toward not using a paper gasket BUT I am still unsure if not using a gasket over time, the manifold in itself will maintain the seal.

Maybe I should start a poll - To use gasket or not to use gasket ,

-this is the perpetual question. :?

 

It wasn't my intention to confuse you, just mention what I would do. Maybe I'm confused about what you're really saying. Can you post a pic of the ones you received from yamaha?

 

Naw, you didn't confuse me, It's just my OCD coming out. 8O

In my quest to do the best job possible I think I might be going to the extreme. :roll:

I will try to get a pic posted in my gallery tonight.

Thanks

 

I'll weigh in here Tony.
You cannot go wrong using the gaskets and goo, it, if unnecessary, is simply redundant. If the gaskets show up on the parts break-down (current break-down, not the 20+ year old fisch), you should use them.
'Nuff said.

 

No poll.
I'll make the call.
Here's precisely what you should do.
Race prep!

Use gaskets treated with a very, very light coat of quality silicone sealant.

Button it up ... and let's get on to tuning this bike!

 

Alright then, I'm ready to RIDE !!! :lol: