Author Topic: CB750 890cc Engine build [Codename: Rattlesnake] (Read 65156 times)

MCRider · « **Reply #75 on:** July 11, 2010, 05:48:29 AM »

Quote from: traveler on July 10, 2010, 11:11:55 PM

Quote from: Jerry Rxman Griffin on July 09, 2010, 09:41:39 PM
Looks great!

I picked up my engine pieces from the coater last week. Fantastic! We discussed coating the cylinders and head. Definitely no on Mike's expensive head. Then we turned to the cylinders. Not as expensive BUT after discussing the "at home" BBQ grill method of removing the liners and the need to bake the cylinders at 380 degrees to sweat out oils, etc then bake the coat at 380 degrees we decided not to coat the cylinders. My guy is good but.... we left nothing to chance.

Just something I thought I'd throw in. If you do it and all is well I'll be pissed I didn't go ahead

Do you hear the swooshing sound? That's the sound of power going out the window!

Hope you rethink that move....

~Joe

Not coating the head shouldn't affect HP.

traveler · « **Reply #76 on:** July 11, 2010, 08:21:47 AM »

...guess I missed that part.

Just hate to see guys put money and effort into a motor, and not touch the head......you leave ALOT of power on the table when you do that.

~Joe

MCRider · « **Reply #77 on:** July 11, 2010, 11:31:16 AM »

Quote from: traveler on July 11, 2010, 08:21:47 AM

...guess I missed that part.

Just hate to see guys put money and effort into a motor, and not touch the head......you leave ALOT of power on the table when you do that.

~Joe

Yup. Headfirst in my book.

Jerry Rxman Griffin aka MuthaF'er · « **Reply #78 on:** July 11, 2010, 08:23:50 PM »

Yep, I have THE head and it will be put to good use. Just won't be powder coated.

Michrobi,

There just isn't enough time when we get this close

I was all ready to prep clean the engine parts, inventory my seals and gaskets, mic the bearings, install the lower studs after chasing the holes and GET AT IT until the phone rang and one of the agencies I signed on with asked me to work 8 more days this month. Money talks. Spare time is scarce once again. I'll be watching you.

michrobi · « **Reply #79 on:** July 14, 2010, 04:20:05 PM »

What, you checkin' out my 34mm intake valves?

AHhahahaha!

Bam!

Pow!

MCRider · « **Reply #80 on:** July 14, 2010, 05:01:00 PM »

Purdy!

Jerry Rxman Griffin aka MuthaF'er · « **Reply #81 on:** July 14, 2010, 09:45:09 PM »

And those narrow light weight titanium retainers and those narrow light weight stronger valve springs! Hell yeah!

michrobi · « **Reply #82 on:** July 15, 2010, 04:57:48 PM »

Jesus man, the difference between a stage 3 port and the Cobra head's port is extreme!

Here is the Cobra 1000cc intake throat

And here is the Rattlesnake 890cc intake throat.

These photos are really poor and the difference is still so obvious. I wish you guys could stop by and put your eyeballs on it, it's like night and day. I need to avoid elevators for 11 days so I don't get any sexual harassment suits.

Here is the Cobra crank next to the Rattlesnake crank. Of course the Goldenrods are gone. They're somewhere in Germany hopefully being put to good use. Much more machining and at a much greater depth on the Rattlesnake's crank. No fluting, but the benefits of a flute on the mains is arguable.

Doctor_D · « **Reply #83 on:** July 15, 2010, 08:59:06 PM »

Hmmm... your 890, my 836...

I wonder if Seattle's big enough for the both of us?

tweakin · « **Reply #84 on:** July 16, 2010, 05:32:56 AM »

DAMN!!! That thing is going to be a beast.

michrobi · « **Reply #85 on:** July 16, 2010, 08:40:06 AM »

Right?

Jerry Rxman Griffin aka MuthaF'er · « **Reply #86 on:** July 16, 2010, 08:44:50 AM »

Mike sure doesn't like to leave much aluminum

MRieck · « **Reply #87 on:** July 16, 2010, 09:27:47 AM »

Quote from: Jerry Rxman Griffin on July 16, 2010, 08:44:50 AM

Mike sure doesn't like to leave much aluminum

That's why I have to epoxy the spigots Jerry.

Sam Green Racing · « **Reply #88 on:** July 16, 2010, 12:17:21 PM »

Dose it hurt having epoxy in your spigots

Sam.

MRieck · « **Reply #89 on:** July 16, 2010, 12:18:31 PM »

Quote from: SamCB750A on July 16, 2010, 12:17:21 PM

Dose it hurt having epoxy in your spigots

Sam.

Only if it's done incorrectly Sam.

Bill/BentON Racing · « **Reply #90 on:** July 16, 2010, 06:18:34 PM »

If I had a CRANK like Rattlesnakes and RODS,I'd have to stay out of elevators also,talk about pitching a tent.You da man.Nice work ,Good luck!

,Bill

michrobi · « **Reply #91 on:** July 21, 2010, 04:11:41 PM »

Jeff and Rainier has the cases. Man, I actually talked to that guy back in March when I was shopping for media blasters to clean the cases and the block. He insisted on using steel media to blast them so I took them somewhere else. I didn't get a good vibe then, but when I talked to him yesterday about the coating he seemed confident and on the same page.

If he eff's them up I'm coming down to Tacoma to cry about it.

tweakin · « **Reply #92 on:** July 21, 2010, 04:39:31 PM »

i am anxious to see how the cases turn out. I was a little scetched on having the cases done, but someone has to be the guinie pig, lol.

I am sure Jeff will do an excellent job on the cases.

Quote from: michrobi on July 21, 2010, 04:11:41 PM

Jeff and Rainier has the cases. Man, I actually talked to that guy back in March when I was shopping for media blasters to clean the cases and the block. He insisted on using steel media to blast them so I took them somewhere else. I didn't get a good vibe then, but when I talked to him yesterday about the coating he seemed confident and on the same page.

If he eff's them up I'm coming down to Tacoma to cry about it.

MRieck · « **Reply #93 on:** July 21, 2010, 08:38:22 PM »

They don't have to be immaculate. I just sprayed Sam's cases....the biggest pieces of S I've seen. Nothing easy sometimes.

Jerry Rxman Griffin aka MuthaF'er · « **Reply #94 on:** July 21, 2010, 10:18:01 PM »

The guy that did mine had them blasted with a plastic media. Said it wouldn't affect the surface appearance.

scottly · « **Reply #95 on:** July 21, 2010, 10:55:43 PM »

Mich, just how much weight was removed from the crank?

Sam Green Racing · « **Reply #96 on:** July 22, 2010, 01:01:02 AM »

Quote from: MRieck on July 21, 2010, 08:38:22 PM

They don't have to be immaculate. I just sprayed Sam's cases....the biggest pieces of S I've seen. Nothing easy sometimes.

Sam.

MRieck · « **Reply #97 on:** July 22, 2010, 12:16:32 PM »

Quote from: SamCB750A on July 22, 2010, 01:01:02 AM

Quote from: MRieck on July 21, 2010, 08:38:22 PM
They don't have to be immaculate. I just sprayed Sam's cases....the biggest pieces of S I've seen. Nothing easy sometimes.

Sam.

Don't be sad Sammy...they are beautiful now. So is the 5mm head I just returned home with. And the Earl's cooler that arrived today etc etc.

bwaller · « **Reply #98 on:** July 22, 2010, 12:27:47 PM »

That bit of news should turn his sad face around Mike. It even excited me!

Big Jay · « **Reply #99 on:** July 22, 2010, 10:37:54 PM »

Quote from: scottly on July 21, 2010, 10:55:43 PM

Mich, just how much weight was removed from the crank?

Should be about 4 lbs.

News:

Author Topic: CB750 890cc Engine build [Codename: Rattlesnake] (Read 65156 times)

traveler