Building a Daytona from a Street Triple Base

Firstly, if cost is an issue I would build the bike as a Daytona with a Street Triple engine spec to start with, as all the little parts will mount up in cost so quickly you could do without pulling the top end of the engine off.

That's just my view, the Street is still a superbly capable engine/chassis package. Anyway here is the list of jobs I think you need to account for:

- Fork change, but also changing the geometry. I believe the Street Triple (even the R) has a more relaxed geometry than the Daytona but most likely the same frame, Maybe you can change the stem also which will fix this?
- Rear Shock and possibly the linkage may need changing, the Street's is set up for a different use I think.
- Rear Subframe as mentioned.
- Foot Controls are totally different
- The actual Clock is the same (if you keep it in Street engine spec) but you will as mentioned need the air tunnel etc.
-Coolant Catch tanks and associated gubbins as it sits on the clutch side of the engine on the Daytona.
- Daytona handlbars, with Daytona (STR M/C) TBH if you have a standard street you maybe best to find a complete Daytona front end with Brakes etc.

Can't think of much else but even that lot is going to run in to a lot of money! Like I say, it really is worth thinking about leaving the engine/Dash/ECU package as a Street just to start with. I hope this has been constructive.

 

Hi Phill, yes that was my thought initially, think the best way to approach it is to build it as a standard Daytona to start with as the bike will require an sva/iva to be registered, then once that is sorted and i've put a few miles on it think about changing a few bits around.
As you said its the smaller detail parts such as fairing brackets that are going to be harder to find without spending extortionate amounts on ebay, its surprising how it all mounts up, most of the larger parts i already have sat in the garage waiting to fit.
I've never ridden a Street so can't comment on performance but as the bike is going to be used mostly on track it would be nice to get the most power out of it i can, having said that there are a couple of friends who run standard ish Daytonas that i do trackdays with so would be interesting to compare them back to back as we are all similar weights and capabilities.
We do most of our riding at Cadwell Park so top end speed isn't really an issue so i may get away with leaving the engine alone, will have to see.

 

Ah, fair enough, tbh mid-range the Street engine feels livlier than the Daytona IMHO, it always felt a bit plumpier in the lower mid-range. However the Street has run out off puff by 10k, it really flattens out compared to a Daytona engine which I think is where the 10hp difference really shows.

that said people ride 250's round places like cadwell (I used to take mine to Rockingham) and with 52hp on a good day I never really 'needed' more power, so the street engine with 90 odd hp will be fine, I would say spend money on suspension and getting the geomtry as per a Daytona should be or it will be horrid when you change the weight distribution back to nose heavy.

 

If it was silly money, could you not do a little work on the street, sell it for good money and then get a tona? Sure you could make some good money on the street over here and then get a cheap tona.

 

Thought had crossed my mind mate, but that would be the eay option I like to have a tinker through the winter and whichever bike i bought would strip and rebuild it so may as well have a bash with the street. Plus i'm curious to see what the differences are.

 

Matt forget about the cams leave the engine as is those pistons arnet up to an increased rev limit but you have the benefit of a slightly torqier motor the yokes and triple clamp are different for the offset and the cables are different lengths the suspensions also softer up front and the increased fairing weight will affect this.

Speedy675 is your man for bits and bobs and hes uber helpful 01293 771 400 and hes got tons on evil bay chinese body kits are plentiful as are standard cans and tor cans good luck sounds a proper task.

 

Thanks for that mate, have a daytona top yoke didn't realise the bottom yoke was different offset, will have to look out for one, have used speedy a fair bit when i had my last daytona, he's really helpful and his bits are usually top notch with quick delivery so no doubt will be calling on him again when the bike gets here.
My biggest question is outer fork tube lengths at the minute as i have a set of daytona internals and a pair of daytona stanchions and was hoping to build them up into the street triple outer tubes. The triumph part number is different between the models but aren't sure if thats just down to the colour difference, could do with both bikes sat side by side to measure each before i start stripping the st legs only to find out they are different.

 

Assuming its not the R valving and everythings different reading this i know you like a tinker about but your stripple could sell for a premium above an 06 daytona (plentyof good low milage out there) which would give you a bob or 2 with the tons of tuning bits that are out there for early bikes ran my 06 for 6 years and loved every minute on track, tour and the road

 

Surely if the lower fork yoke is different the top one also must be? Or the stem is in offset bearings?

 

Man, this is getting deeper by the minute, started stripping the Street and am finding loads of differences between it and a Daytona, how triumph can manufacture two things that are similar but change EVERYTHING!! Even down to looms and all but hey ho guess it all adds to the fun.
Will post some pics when i get chance to give an idea of what the differences are.

 

‘Scuse the newby. I’ve been following this forum for ages but never been able to contribute much before now.
It just so happens I’m in the middle of assembling a Daytona from spares, it’s on my bench in front of me now …….so I’m in a good position to tell you exactly what the differences are and what you will have to find …… I hope you have deep pockets. ;-)

Starting from the front, you are going to need:
Kayaba forks x 2
4 pot radial Calipers x 2
Front discs x 2 (you may get away with the Striple’s – thought it won’t look authentic)
Radial Master Cylinder
Fluid Reservoir + hose + bracket
2 braided hoses (they’re different to those on the 2 pot caliper fitted to the Striple)
Nose Fairing
Windscreen with eight rubber mounts and screws
Mirrors x 2
Front sub-frame
Air Duct with grille + rubber + flapper valve actuator
Left hand fairing
Right hand fairing
Left hand cockpit infill
Right hand cockpit infill
Front triangle filler with mounting grommets
Left hand finisher with plastic screws
Right hand finisher with plastic screws
Headlight unit
Top yoke (the bottom yoke is the same as the Striple – it’s the fork length that sets the different rake and trail)
Clip-ons x2
Bar-end weights x2
Complete Wiring harness (all the relays and fuses are in a different place)
Flapper vale solenoid + bracket
Vacuum reservoir canister
Rubber hoses for above (3)
Left hand fairing mount bracket (under tank)
Right hand fairing mount bracket (under tank)
Daytona cams x2
Coolant overflow catch tank with hoses x 2
Rear left hand fairing mounting plate (alloy) with grommet
Radiator (the striple’s has the side finisher mountings on the side) though you might get away with this.
Left hand rear-set with gear change link
Right hand rear-set with brake pedal
Left hand passenger foot rest
Right hand passenger foot rest
Exhaust header
Exhaust mid-pipe with metal gaskets (2)
Exup valve servo motor with drive cables
Stainless servo finisher and screws for above
Silencer with back finisher
Silencer top finisher
Rear sub-frame (The Daytona’s is taller to accommodate the exhaust)
Sub-frame under-tray
Exhaust heat shield
Seat cowling
Rider seat
Passenger seat
Rear number plate hanger with indicators
All of the nuts, bolts, screws, washers and rubber-ware to mount all of the above.

If you really want a Daytona, it wold be far less work and make more economical sense to just sell the Striple in the spring time and buy a Daytona.
Right … that’s it, I going to hide behind the bench again for another few months …..

 

Cheers for the comprehensive list mate, i think i've got pretty much all of that covered barring the loom which i'm going to adapt i think rather than replace, i agree about the economical sense but as i mentioned in the previous posts its more about learning and experimenting for me, i've had plenty of bikes in the past and painted them to make them look pretty and chucked aftermarket bits on but just fancied a bit of a challenge.
Plus i already had the majority of the Daytona bits in the garage from the previous bike i owned so its not been too expensive thus far, although after my couple of hours stripping parts off the bike tonight that may all change...

 

Welcome

 

I have an OEM exhaust can if you need one. It's free. Just PM me.

 

Cheers for that mate but i already have the exhaust bits thanks, only thing i'm really stuck for at the mo is a standard set of rearsets

 

sounds like quite a challenge, good luck mate!! will it be ready for this summer??

 

Am hoping it will be done by the end of the month, the bike is back on its wheels with the Daytona suspension fitted, engine is rebuilt and Daytona cams and pistons fitted, just need a few finishing bits and some free time (seems to be in short supply at the minute!) and we should be ready for getting it sva tested and registered ready for its first outing if we have a spot of decent weather

 

Removed the clip on for you today so will be in post on Monday. Spent my day cleaning and degreasing. Seems to take for ever and it still seems dirty

Bazzer

Sent from my Nexus 10 using Tapatalk 2

 

Thanks mate, look forward to receiving it. Some stuff u just can't seem to get clean, it does help when it's in a thousand pieces though so you can clean each part individually, also helps as the motor is already black in mine so looks tidy

 

Engine fitted back in bike with Daytona cams and pistons fitted, another chunk out the way!!





Just waiting for the clip on from Bazzer so can get the forks & wheels back in, and the ignition switch from Norfolk Boy and we can see how she runs!! Nervous is not the word!!