FZR400 guys: F3 rad v. FZR60 rad

Had a flashback

FWIW, it made 72.4 @ the rear wheel (Dynojet Model 100, IIRC)with the following setup

13.5:1 Cosworth pistons (machining works of ART)
stock rods (balanced)
stock crank (lightened and balanced)
full-radius valve job (hand lapped valves)
minor porting (matching and casting flash removal)
factory (via Yam-USA) CDI box with SILLY redline
110 octane race gas (can't remember if it was unleaded or not)
Factory variable ignition pickup
stock 400 intake cam (not degreed)
stock 600 exhaust cam (not degreed)
D&D Exhaust
Keihin FCR-33s (jetted somewhere around 120s)

I'm sure that if we'd messed around with the cam timing that we could have gotten to 75 at the wheel, no problem.

Passed tech every time and teardown more than a few times.

I'd really like to do this sort of thing again, so anyone in the Seattle area with an FZR400 that needs some wrench help....look me up.

edits: more details

 

That sounds like a fun motor for not _too_ much dough. Mine is all stock, with Falicon crank and rods w. cryo treatment, and stock carbs. I haven't dyno'd it, but I might like to see what it puts out if my repairs go well.

Wish me luck!

 

It scares me to think of what I used to spend on that thing.....and I'd love to have it back

 

Well, aside from this one specific issue I'm dealing with, I think I have one of the best sorted Fizzers around, and it will be for sale at the end of the season, with mountains of spares, including a motor. It's Lee's old bike, and as suck, it's got pretty much the best of everything...SPA tach, cross-mount damper, Thermosman forks, 90-model brakes, etc. etc.

If you're intereseted, PM me, and I'll let know know details, as well as a price (I haven't thought up one yet).

 

Lets see how this new house thing shakes out at my end and revisit this at the end of the season.

May have to sell the rally car and go back to racing bikes....so I better stick to my diet....OUCH

 

Dear Thunder

I had never seen a camshaft before I bought my bike late in 2003. Durring the 04 season (my first season racing), I learned more and more about it as I had my share of over heating and head gasket problems. At the GNF last year I spun a rod bearing. It took a little encouragement, a shop manual, and someone I could call every day, but I tore it down and rebuilt it on my own. You can do it!
I have done a track day on it, and it runs great! Knock on wood it will be reliable.
Mr. Temme, thanks for the head torque thought, I better check that. How long do you typically run it before checking?

 

Diet? Hell, I'm 300 pounds with gear!

I was 320 w/o gear when I raced at Nashville last year (my first race)...yuck. I'm dieting myself...down to about 280 right now, and on my way to 240 or so by the end of the summer I hope.

Anyway, I'm planning on running the bike through this season, so no problem re: waiting until then to think about things. I only mentioned it because you said you wish you had yours back

 

Re: Dear Thunder

Ussually after a rebuild I would give it a few heat cycles and re-torque, and then check it again after the first track or race weekend on the new motor.

After that it shouldn't lossen up but I would always re-check it for safe measure if I was going in to check valve clearances or something like that.

Its most critical on a fresh rebuild because things (like cylider studs) move and stretch when they go through those first heat cycles.

 

Jason, when I re-torque the head, do I loosen each fastener, and then tighten to spec, or do I just tighten from wherever the fasteners are at?

Thanks!

 

Holly moly! with gear you weight as much as my whole FZR!

No wonder that poor little motor poped it's top

 

Ya I know...I'm expecting a visit from the ASPCFZRs any day now

 

technically you always should lossen to re-torque but for this application I always check to see if they move from where they were. If they move I lossen and re-torque.

Do it one at a time though, don't lossen everything and then re-torque.

 

Sell that fizzer and buy this one.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=9809&item=4547234002&rd=1

 

Ya I saw that...pretty cool, that. DO you think it might draw attention that a 400 is wheelying out of corners with a 300 pound rider aboard?

Nah.....

 

DAMN.....I thought I had some really silly ideas of what to do to an FZR400.

That guy takes silly to a brand new universe

It would be entertaining, that much is certain

 

does anyone know what size allen wrench it takes to torque the head down? are they 6mm?
is it a 10mm or 12mm socket that fits the outside?

 

The outside is round

Almost sure it is a 5mm, but could be a 6.

Rich

 

6mm

 

Thanks guys! Now that you mention it the outside is round isn't it!

 

Upp.