Godzilla - Rebuilding the Beast

[MAXIMAN]

Rob - I bought it from the High Preist of Temple Eleven...Bob Jones at Merriam Cycles.

He tried to sell me a Mac or a Jardine for like $450. I passed and took the used Kerker.

If you need exact measurements I'll take pics and measure it for ya.

However there is one on ebay right now. The guy says he doesn't know what it is...but I am sure it's either a Kerker or a Vance & Hines. I doesn't appear to be a MAC because the chrome quality looks different than a MAC and the silencer mount is in a different place than the MAC.

Here's the link:------> Header on Ebay

[79XS11F]

Thanks for the link
I'm currently running a MAC and I'm not too happy with it. I wonder if that pipe would fit my 1979F. It however dose not look like a Kerker.
Rob

[MAXIMAN]

The only pipes I know of that were made for the Eleven besides the foreign stuff like Motad were Kerker, Supertrapp, MAC, Vance & Hines, Hooker, and R.C. Performance (Russ Collins). There may have been others but those were the dominate pipes of the day as I recall.

Jardine...if I'm thinking right...is a Johnny come lately. I don't recall Jardine in the late 70's or early 80's.

[79XS11F]

He is also selling a NICE set of carbs with pods and a complete engine. He however may not ship to Canada as is often the case on eBay. I don't know what the issue is with shipping to Canada the only difference is the Address on the box and the shipping price the buyer pays
Rob

[MAXIMAN]

Rob

The "issue" with Canada is ignorance. 75% of the people in the USA couldn't name half of the 50 states much less the two countries that border the US. When asked on the street "What countries bordered the US to the north and south?" I heard one college student respond ...are you sitting down...

"Oh totally easy...uh like uh Alaska and Texas!"

I'm guessing some idiots think Canada is on Mars.

That's it ... next time I sell an item on Ebay I think I'll make a disclaimer in the shipping paragragh.

"Will not ship overseas or to MARS"

[79XS11F]

It is however a bummer. SO if you have the time and would be so kind ... YES details about your Kerker pipe would be GREAT. I am thinking that I can use the headers off my MAC and have a welding shop or muffler shop make the rest up for me. I may even try it myself my brother has a MIG welder that I have not even tried out yet.

I'm guessing I need to know ...
The length and DIA of the collector.
Length of the baffle and the DIA at both ends of it.
total length and DIA of header pipes.
OH and some measurement of the turns and distances between the turns between the collector and the baffle.

This information would be GREAT
Rob

[oldbiker648]

MAXIMAN,
A very well wrtten and informative synopsis of the mods you have pursued to make your Maxim more suitable for its intended purpose. By the way, you have an extremely clean bike and I think most of us, married or divorced are sitting here in awe of the fact that SWMBO weighs but a petite 110#. The fact that she may like to pack 150# of gear to travel with for a weekend is another entire discussion, although your newly found torque will certainly help moving the gear, if you can find adequate space to store it. Looking for the final chapter to this story when you get there.
John

[50gary]

Maximan, I too would be very interested to know the header diameter, the length of the primary tubes and the diameter of the merge collector. If you could post or email that info I'd be in your debt at least a couple of beers.
Cheers, 50gary

[MAXIMAN]

Gary - Rob

Will do. I know this...after talking to Dan Hodges about the short comings of the 4-2-1 I just bough he went and "eyeballed" his Supertrapp. I think the primaries were 38mm OD ... all four went into a collector that was roughly 2.25 inches (~55-60mm) then flow into the megaphone which the diameter was even larger obviously.

We'll get more specific. Supertrapp has the "coronet" mute assembly with removeable disc. The Kerker has a set screw I think that allows you to remove the baffles altogether and replce with street or competition versions.

If I were building a header from scratch the obvious pattern would be a Kerker/Supertrapp. But I would stop at the collector and simply buy a Supertrapp silencer with removeable disc. Supertrapp still offers them for sale.

Check it here: Supertrapp Silencers

[MAXIMAN]

Originally posted by oldbiker648
By the way, you have an extremely clean bike and I think most of us, married or divorced are sitting here in awe of the fact that SWMBO weighs but a petite 110#. The fact that she may like to pack 150# of gear to travel with for a weekend is another entire discussion,

John

Thanks I try to keep the old horse looking good.

SWMBO is a natural. Even at 46 she has a very high metabolic rate and can literally eat whatever she likes never gaining much weight.

You might be surprised at how much crap you can pack onto the luggage rack of that bike.

[trbig]

I feared my mileage had gone to pot in lieu of the priviledge to live in Wheelie-ville.

You might be surprised at how much crap you can pack onto the luggage rack of that bike.

Ahhhhh... now the truth comes out of how you got to be in Wheelie-ville!

Tod

[MAXIMAN]

If I took SWMBO to Wheelieville I probably wouldn't live to tell about it.

[MAXIMAN]

Update:

Speaking of Wheelieville...

I have now put about 1600 miles on the beast. I haven't told you guys what all has happened because I did not wanna depress you like I was.

Even though we took the bike from 72 hp to 87 hp....it just wasn't where it should've been. While waiting on a header I took Zilla home and started riding him. At 500 miles the compression didn't look good. At first I had about 120 psi pumping on all 4. NOT GOOD.

But I had several calmer heads advice me to RIDE RIDE RIDE.

Now at 1600 miles the compression is 145 to 150. I suppose the rings are finally starting to lap themselves into the cylinder walls. However I don't expect to see much more than that with this massive intake cam. I'm probably loosing quite a bit of pumping compression due to the fact that the cam has almost 360 degrees of DURATION! ...well almost

The good news is with the new found increase in compression coupled with the header I got off Ebay last week MR. ZILLA is starting to cook. I could be wrong but ... my butt dyno tells me the rwhp on the bike is now firmly ensconced in the mid 90's! Wahooooo!!!!

Ever power wheelie a full dressed bike? Uncle Cody did about 4 hours ago. I took the mythical beast down country club road about 3 miles to get him warmed up. From a roll in first gear at about 4000 rpms I snapped the throttle WFO and the big lizard lept a good two feet into the sky...No clutch...straight up power wheelie. . ...He picks up a bus and he throws it back down as he wades through the buildings toward the center of town....Oh no there goes Tokyo...

And that is NOT tuned. I can only imagine what he may do once I get the bike on a dyno in a few days and achieve the optimum AF mixture.

Stay tuned...same Bat channel...same Bat time

[trbig]

......Go Go Godzilla!!

I have heard both ways by people that know more about it than me..

1. Take it easy on it for the break in period...

2. Break it in how you're gonna ride it... If you like it WFO... break it in that way.

????

I don't know what the official break in period for the rings on a bike is, but I have heard it's 15-20,000 miles on a car.... but I don't know many cars you can drive around at 5-6,000 rpms either!
Can't wait to see/hear it next month in Talimena!!


Tod

[John]

When I did my big bore, I called Wiesco, and asked them how they recommended breaking in the rings. They said to drive at varing engine speeds for the first five hundred miles, then change the oil, and you're ready to go .