Ducati Monster Forum

Moto Board => Tech => Topic started by: He Man on May 30, 2010, 01:43:47 PM

Title: Painting Engine
Post by: He Man on May 30, 2010, 01:43:47 PM
Schools out. I want to strip my bike apart. service the engine, paint it and put it all back together in 2 weeks....

I am wondering how hard it is to remove the heads on the bike. Is it as simple as removing the 4 bolts on the head and pulling it off? I am going to soda blast everything and want to minimize the amount of stuff i need to pull off.

Are the heads 1 single piece  or 2 piece? ive seen the older monsters with the cylinder and the actual head with the valve system.
Title: Re: Painting Engine
Post by: scduc on May 30, 2010, 01:57:51 PM
Are you going to paint or powder coat? And are you going to do the case and heads or just the covers?
Title: Re: Painting Engine
Post by: He Man on May 30, 2010, 01:59:17 PM
everything. and by paint. Powder coating it would be way to much work.
Title: Re: Painting Engine
Post by: greenmonster on May 30, 2010, 02:22:16 PM
QuoteI am wondering how hard it is to remove the heads on the bike. Is it as simple as removing the 4 bolts on the head and pulling it off?
Yes.

And do not paint if not absolutely necessary!!!

Take a looong moment and look at all involved, just the heads w all angles etc.....

Just a warning. [thumbsup]
Title: Re: Painting Engine
Post by: Duck-Stew on May 30, 2010, 02:36:55 PM
On the older bikes (750, 800, 900) there is NO cylinder head gasket but the DS1000 & 1100 engines do have those gaskets which are about $100 for the pair (give or take...been a while since I ordered them). 

You can remove the cylinder head as you described, but you'll need a fresh gasket if you do that. 

2 weeks?  You sure?!?  That's a lot of work man.  I'd be sure I had ALL the O-rings and gaskets before doing anything if it were me...and I was trying to keep everything in that time-frame.



The *best* paint approach for the newer engines (2001 & up) is to use a paint stripper to remove the garbage that's masquerading as factory paint on the engine.  Then, use an acid-etching primer to provide a top-notch basis for the paint.  As far as the paint goes, I swear by the VHT hi-temp engine paint.  It's worked for all the customs I've built so far and I have no plans of switching anytime soon...


Best of luck man!!!
Title: Re: Painting Engine
Post by: greenmonster on May 30, 2010, 03:20:26 PM
Guess I should say I sandblasted & coated w good laquer/hardener engine paint,
that took a while... [roll]
Title: Re: Painting Engine
Post by: He Man on May 30, 2010, 03:26:37 PM
$100? damn. Thats a lot of $$$ spent on something to just to paint the heads. It doenst need to be super nice finish, it just needs to not peel off and crack.

Can you just mask and paint the engine as a whole?

I want to remove the engine cover any intake and exahust holes and mask them to seal it off. then just soda blast the whole engine as 1 piece. spray it clean with water, soap and a nylon brush. then use a self etching primer and go VHT on top. Id have to pull the pulleys to do that i assume.

Do you think chemical stripping is better than Soda blasting here? It would only cost me $60 bucks max (Thats 100lbs of soda) to strip the whole thing. and it would be easier to brush it clean than it would be to scrub chemicals off... unless theres a well price easy to use paint stripper that i can litterally scrape off, and then use a soda blaster to get the nook and crannies.

Does the VHT self etching primer work well?

Quote from: greenmonster on May 30, 2010, 03:20:26 PM
Guess I should say I sandblasted & coated w good laquer/hardener engine paint,
that took a while... [roll]

how long did it take you? And did you actually use sand, or do you mean media blasting? i have soda blasting and glass blasting in house, i can swap out the glass for something else since its inside a container.
Title: Re: Painting Engine
Post by: Duck-Stew on May 30, 2010, 03:54:15 PM
I've got no FHE w/soda blasting but I *guess* there would be no problem with it so long as all the holes were covered up.....
Title: Re: Painting Engine
Post by: ducpainter on May 30, 2010, 04:23:05 PM
I just did a motor that had been soda blasted.

It's pretty much a waste of time IMO.

Not quite aggressive enough.
Title: Re: Painting Engine
Post by: He Man on May 30, 2010, 09:24:56 PM
:( chemical strip it is i guess. maybe a combo. ill try to see what happens. i dont think im going to seperate the heads. ill try to do everything in 1 piece.
Title: Re: Painting Engine
Post by: ducpainter on May 31, 2010, 03:24:48 AM
Quote from: He Man on May 30, 2010, 09:24:56 PM
:( chemical strip it is i guess. maybe a combo. ill try to see what happens. i dont think im going to seperate the heads. ill try to do everything in 1 piece.
The combo idea isn't bad.

Chemical strip, neutralize with water and dry, soda blast, prime and paint.


Title: Re: Painting Engine
Post by: scduc on May 31, 2010, 12:11:33 PM
Is this "soda" blasting the same as the typical "Silica" sand blasting?
Title: Re: Painting Engine
Post by: ducpainter on May 31, 2010, 01:33:34 PM
Quote from: scduc on May 31, 2010, 12:11:33 PM
Is this "soda" blasting the same as the typical "Silica" sand blasting?
same equipment...

different media.
Title: Re: Painting Engine
Post by: gOoIe B on May 31, 2010, 06:33:13 PM
You are gonna be one busy man trying to do all this in a 2 week timeframe.  Its possible, but I doubt you'll be doing much else in that time.

I would try the combo strip method as well, assuming you have the resources.  The OE engine paint is really tough to completely remove.

Good luck and of course let us know how it goes!

[popcorn]
Title: Re: Painting Engine
Post by: Ducatl on May 31, 2010, 09:12:16 PM
IIRC putting soda into a regular pressure blaster does not work very well/at all.  Apparently the retrofit kits are actually made for a reason ;D.

I have no FHE with this but it's what Google has told me in the past.  Also, HF now has a small soda blast unit for $99.

2 weeks...GL
Title: Re: Painting Engine
Post by: ducpainter on June 01, 2010, 01:49:56 AM
Quote from: Ducatl on May 31, 2010, 09:12:16 PM
IIRC putting soda into a regular pressure blaster does not work very well/at all.  Apparently the retrofit kits are actually made for a reason ;D.

I have no FHE with this but it's what Google has told me in the past.  Also, HF now has a small soda blast unit for $99.

2 weeks...GL
The nozzle/gun is different...true.

The equipment is basically the same.

Better?
Title: Re: Painting Engine
Post by: He Man on June 01, 2010, 05:55:53 AM
The conversion looks very similar to the sand blasting kit. I couldn't really tell you why you cant throw soda in a sand blaster nad use it, but i know it doenst work cause i was curious enough to try. It just clogs everything up. ( i have both).

Im saying 2 weeks, but dont chop my hands off if i dont delivery. Im rough guessing. I have nothing better to do for the next 2 weeks. I have my own garage. and im enlisting the help of 2 people who owe me helpers time.  :)

I still dont know how i am going to tackle it cause everytime i want to start i realize im missing something. Right now my main problem is....

theres a 2nd bike in my garage that i need to kick out...UMM ERICCHANG87  >:(. ( just kidding dude, im in no rush really) and im still waiting for my valve adjustment tools to come back to me after letting someone borrow them. I fear my micrometer and closing shim measuring tool got lost in the mail.  :-\
Title: Re: Painting Engine
Post by: Langanobob on June 01, 2010, 03:54:06 PM
He Man,

Just my two cents worth - if you were going to paint your bike you had your chance at winter break.  It's spring now, just ride it and forget about the paint.  Even if you are painting it in preparation for selling it, you will not recoup your investment in either time or money.

You will be back in school before you know it so ride and travel and party or whatever it is you want to do during the break, but no paint! 
Title: Re: Painting Engine
Post by: greenmonster on June 01, 2010, 04:11:37 PM
Quotehow long did it take you? And did you actually use sand, or do you mean media blasting?Sand.

Think I spent almost a full 40h week w that,
splitted engine & tried to be thorough.
Don`t do if you don`t really have to.
Title: Re: Painting Engine
Post by: gOoIe B on June 01, 2010, 04:13:05 PM
Quote from: Langanobob on June 01, 2010, 03:54:06 PM

Just my two cents worth - if you were going to paint your bike you had your chance at winter break.  It's spring now, just ride it and forget about the paint.  Even if you are painting it in preparation for selling it, you will not recoup your investment in either time or money.


IAWTP; I was gonna do all my lowside repairs and powdercoating over the winter break, but got caught up in too much other crap, like a new to me Trans Am, and people issues, and so forth.  So I ended up working the monster throughout the end of winter and most of spring, missing some absolutely awesome spring days for riding.  Hell I've only been on 2 wheels for a week now.  I missed it so much.  Now I'm sworn that if a mod is not a relatively simple bolt-on mod, it will wait 'till winter (this time: full suspension, more powder, and some other cool shit  [evil] )
Title: Re: Painting Engine
Post by: He Man on June 01, 2010, 07:23:34 PM
I can live without painting it. I just dont like working on my bike in the winter. Its cold, im still riding ( i ride year round and as long as it isnt snowing, or under 15-20 degrees, ill still be commuting).

I also need to pass tech for the 3 track days i have lined up this year. I hear they are strict with motors with oil, and theres LOTS of it on mine. Even if its not oil, it s probably tar grime and watever that looks like it.
Title: Re: Painting Engine
Post by: erichan8757 on June 04, 2010, 09:10:34 AM
Quote from: He Man on June 01, 2010, 05:55:53 AM
The conversion looks very similar to the sand blasting kit. I couldn't really tell you why you cant throw soda in a sand blaster nad use it, but i know it doenst work cause i was curious enough to try. It just clogs everything up. ( i have both).

Im saying 2 weeks, but dont chop my hands off if i dont delivery. Im rough guessing. I have nothing better to do for the next 2 weeks. I have my own garage. and im enlisting the help of 2 people who owe me helpers time.  :)

I still dont know how i am going to tackle it cause everytime i want to start i realize im missing something. Right now my main problem is....

theres a 2nd bike in my garage that i need to kick out...UMM ERICCHANG87  >:(. ( just kidding dude, im in no rush really) and im still waiting for my valve adjustment tools to come back to me after letting someone borrow them. I fear my micrometer and closing shim measuring tool got lost in the mail.  :-\

Slave #2 is here, soon as you are about to  start doing it I will move it and I am gonna
offer my professional help ! ha