Author Topic: Bonneville Turbo CB500/550 (Read 166618 times)

fastbroshi · « **Reply #125 on:** June 06, 2012, 02:54:09 PM »

Quote from: Greggo on May 14, 2012, 04:53:47 PM

Greg, I was just going back through your pics and saw this oil line at the bottom. Does this feed the turbo? I hope it's not taking away too much pressure from the circuit that feeds the cam.

Greggo · « **Reply #126 on:** June 06, 2012, 04:48:53 PM »

Broshi, that's a good question, and yes, it is the turbo's 'feed' line. However, considering the how far the gallery plug flew the first time we started it, I don't think I have any issues with oil pressure.

I cleaned out the carb again today, and it's at least revving up, and reacting to the throttle position. I'm trying to find some more info on this carburetor so we can get it running better. I'm hoping it can be set up for the street with this carb, but if worse comes to worst, I'll buy a Mikuni.

I'll post another video later tonight...almost a minute of the bike running, and revving up

Reassembled some Koni's for this bike after throwing some fresh paint on the springs and bodies. The paint didn't come out perfect, but I'm alright with that on this bike.

cben750f0 · « **Reply #127 on:** June 06, 2012, 05:09:00 PM »

I'm in... This is just waaaaaay to awesome to miss out on!!! ;-)

Peace

Sent from my T9296 using Board Express

Greggo · « **Reply #128 on:** June 06, 2012, 06:31:56 PM »

There's electric tape wrapped around the exhaust pipes at the head for some reason. That's where the smoke is coming from near the end of the video. Wind was blowing thru the shop as well. Don't worry, we're not destroying the bike

Stev-o · « **Reply #129 on:** June 06, 2012, 06:45:23 PM »

Wow! That thing just wants to scream. How many R's was that?

FrankenFrankenstuff · « **Reply #130 on:** June 06, 2012, 06:46:52 PM »

This is so rad. You win. The forum already has a BOTM but how about a FSOTH (first start of the month) or POTH (project of the month). You have gotten all of our motivations bubbling with those tones.

Greggo · « **Reply #131 on:** June 06, 2012, 07:13:24 PM »

Quote from: Stev-o on June 06, 2012, 06:45:23 PM

Wow! That thing just wants to scream. How many R's was that?

No tach on it right now, but I think it was at a pretty steady ~~5k, then it jumped to about 7k~~ On second thought, and a closer listen, I think it was more like 3-4k for most of the video, then 5-6k at the end...you can see Ron starting to fumble to kill it when that happened.

Quote from: FrankenFrankenstuff on June 06, 2012, 06:46:52 PM

This is so rad. You win. The forum already has a BOTM but how about a FSOTH (first start of the month) or POTH (project of the month). You have gotten all of our motivations bubbling with those tones.

Lol! You know I'm not ready for THAT Frankie! I did ask my dad to have the VIN verified next week, so I can get it titled, and one step closer to the road

I'm thinking about using the Lesters too.

fastbroshi · « **Reply #132 on:** June 06, 2012, 08:46:18 PM »

Quote from: Greggo on June 06, 2012, 04:48:53 PM

Broshi, that's a good question, and yes, it is the turbo's 'feed' line. However, considering the how far the gallery plug flew the first time we started it, I don't think I have any issues with oil pressure.

Quote from: bwaller on December 01, 2007, 08:38:20 PM

The two top end oil passages are fed from the outside main crank journals. If going to external feed these two passages should be plugged in the upper case, then also in the head both sides. You can access the main oil gallery on the bottom case (see pic), right side or drill and tap into it beside the filter housing. With external lines the oil is also fed into both ends of the gallery in the head that supplies the cam with oil, same as the internal passages.

This is from one of Bwaller's posts a while back, how that circuit has been bypassed in the past, just fyi in case you didn't know. Not shown in the pic is how the circuit is blocked off where it goes through the block, so all pressure is circumventing the joint between the head and the block. The way that line is, the pressure is being divided between the turbo and the cam journal. Did you ever have the top end off to look at the cam? Not trying to open a can of worms or anything but it would be a good thing to assess.

Greggo · « **Reply #133 on:** June 06, 2012, 09:46:34 PM »

I have not had the valve cover off the motor. I did verify oil was flowing to the top end with tappet covers removed. It was getting plenty of oil upstairs. BUT, that was not at high engine speeds. It's tough dealing with a bike like this one...I don't know who built it, so I have no idea how much knowledge they possessed, and applied to the build. It seems they had a good idea of what needed to be done, with the HD valve springs, the 500 cylinders, a modified clutch basket for better oil flow, etc...And, it seems they had a purpose in mind...to go really fukin fast at Bonneville...I gotta think they knew to beef up the lubrication system on a balls to the wall turbo motor. I see what you're pointing out, but my question now becomes: How were the oil lines on ATP turbo kits routed. IIRC, it's the same as I've got here...pickup from the RHS gallery plug, then returned into the case from the dipstick, right??

I'm gonna go check out Bob3050's bike. He took some great pics of his build.

Greggo · « **Reply #134 on:** June 06, 2012, 09:53:53 PM »

Look very closely, and you can see the lines on Bob's bike follow the same pattern as mine. Though his line from the gallery seems longer, and goes around the back of the motor up to the turbo, instead of on the side like mine. That big piece sticking from the dipstick is the return line fitting.

When I start riding this one, I won't be pushing it to the limits. Knowing it has a beefed up top end, it can likely spin to 10k. I'll probably keep it under 8, especially if that turbo kicks in early.

fastbroshi · « **Reply #135 on:** June 06, 2012, 10:01:12 PM »

Hmm so maybe that blank below the points can be used to get some flow without harming the feed to the bottom end. Those restrictors in the block do have small orifices after all. Maybe Bob can chime in here. He's had that kit for a long time. Hell maybe he even has the instructions.

Greggo · « **Reply #136 on:** June 07, 2012, 09:14:43 AM »

I'll PM Bob. It seems like it must work.

Jerry Rxman Griffin aka MuthaF'er · « **Reply #137 on:** June 07, 2012, 09:26:07 AM »

Keep it under 8 huh?! Better get a limiter set up. That sum#$%* will probably pop from 8 to 10 before you're able to untwist the throttle once the turbo spools up.

Bob3050 · « **Reply #138 on:** June 07, 2012, 09:38:45 AM »

Greggo: I've been following your progress and that engine sounds good in your video.As far as the oil supply goes I've never had any problems with flow to either the cam or the turbo. The old Rajay turbos don't use ball or roller bearings but have a kind of floating bushing set-up. I don't know if your turbo would need a greater volume of oil than mine or not. I guess the manufacturer of your turbo would have that info. Good luck and I'm eagerly watching this thread.
Bob

Flying J · « **Reply #139 on:** June 07, 2012, 10:36:03 AM »

So i guess your ot going to sell this one anymore.

Keep up the good work.

Greggo · « **Reply #140 on:** June 07, 2012, 12:20:44 PM »

Quote from: Bob3050 on June 07, 2012, 09:38:45 AM

Greggo: I've been following your progress and that engine sounds good in your video.As far as the oil supply goes I've never had any problems with flow to either the cam or the turbo. The old Rajay turbos don't use ball or roller bearings but have a kind of floating bushing set-up. I don't know if your turbo would need a greater volume of oil than mine or not. I guess the manufacturer of your turbo would have that info. Good luck and I'm eagerly watching this thread.
Bob

Thanks for chiming in Bob. I'm not sure of the bearings inside the IHI turbo. The line is larger on the outside than the ATP hose I have on the other kit, but I'm not sure about the inner tube size.

Quote from: ffJMoore on June 07, 2012, 10:36:03 AM

So i guess your ot going to sell this one anymore. Keep up the good work.

Sorry FF, at least not right now. It's got too much potential to let go of in this state. I've got to have it street legal to get the kind of money I'd want. I'll give you first crack at it if I let it go on here.

Greggo · « **Reply #141 on:** June 07, 2012, 02:55:24 PM »

Quote from: Jerry Rxman Griffin on June 07, 2012, 09:26:07 AM

Keep it under 8 huh?! Better get a limiter set up. That sum#$%* will probably pop from 8 to 10 before you're able to untwist the throttle once the turbo spools up.

Right!? The Dyna 2000 going on here has a limiter

Stev-o · « **Reply #142 on:** June 07, 2012, 03:43:35 PM »

Greggo - you can't sell it till WE ride it at Bonneville next year!

Flying J · « **Reply #143 on:** June 07, 2012, 03:47:46 PM »

I would like to run my 550 at Bonneville. No way it will come close to that bike but i think it would be fun.

ZanVooden · « **Reply #144 on:** June 08, 2012, 08:42:35 AM »

Alright, I have to stop checking this thread because its making me want to start my Turbo 750 big bore project... And I have one other project bike to finish and one to fix right now...

Great work getting it running. That thing will be wicked.

y2kc0wb0y · « **Reply #145 on:** July 18, 2012, 04:36:40 AM »

Subscribed

Greggo · « **Reply #146 on:** July 18, 2012, 05:46:45 AM »

I wish I had some progress to share, but this bike's just been sitting in the shop corner, collecting dust while I get into the groove of this new morning job. I need to find a new throttle cable to work with the Dell'Orto carb, and Tarozzi throttle...that's the next item on the long list for this bike.

y2kc0wb0y · « **Reply #147 on:** July 18, 2012, 09:59:36 AM »

:O) almost bid on this bike. I follow most of Carpy's eBay posts and when he cleaned shop to move to his new location, he unload a lot of stuff cheap. Custom Bass Guitar was cool too. I wish you the best with getting this bike street worthy...you might reconsider leaving that extended swing arm on there. I imagine under boost (depending on gearing) it probably will want to point the front end straight north.

cabrala · « **Reply #148 on:** July 18, 2012, 10:53:22 AM »

Am I late to the party?!

6 pages of awesomeness, Gregg!

Don't worry about how long it takes, even if the crowd (myself included) wants hourly updates. Hope the new gig is going well. Keep us posted when you can.

To jump on the prior post, I think you might want to consider leaving the extended swing-arm on there. I think it'll do you more good than harm with the turbo. Any reason in-particular for its removal? Would it somehow inhibit the street legal-ness you are going for?

Greggo · « **Reply #149 on:** July 18, 2012, 07:44:59 PM »

No reason to remove (and save) it other than handling.

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Author Topic: Bonneville Turbo CB500/550 (Read 166618 times)