Derbi GPR Nude

[SQL]

So today I decided to venture up to Paddys to obtain a bike that I wanted from him for ages.

So turned up in the van and piled it all in including basically another bike in spares.

Then left paddy and went to the Oakdene had breakfast then home.

Here is the bike when I got home

https://i43.tinypic.com/2eulrvb.jpg

So after checking the bottom end of the engine and finding it is rumbling (not shocked was expecting a rebuild/new engine anyway)

Set about taking it apart ready to drop the engine and split it

https://i40.tinypic.com/2rm4aj8.jpg

Panels on

https://i44.tinypic.com/v81nqt.jpg

Panels off



https://i42.tinypic.com/29fpbf6.jpg

Subframe off and airbox, oil tank, carb out.

https://i40.tinypic.com/23mr2tv.jpg

Wiring loom all disconnected but not removed as don't have a screwdriver big enough for the earth >_<

-----------------------

Plan is to drop the engine and split the cases and replace all bearings (this will be done once all parts have been sourced)

Expansion chamber is rusty but good condition so that will get washers welded on to the dents and slide hammer treatment, then wire wheel and hi-temp paint.

Fork seals will be done and forks refreshed.

Bits it needs that I don't have..

Radiator
Barrel and piston
Gear set (Derbi make them from plastic wtf and its snapped)
Brake master cylinder
Lock set
Chain and Sprockets
General service bits

Will be updating this thread as an when I do stuff!

[evoboy]

If the bottom end is rumbling it might be an idea to get the crank rebuilt aswell while your in there.

New rod, new big end roller bearing, new main bearings and seals.
____________________
Suzuki GT250 x7------- Fazer 600------CB250RS------Aprilia Rally 70----- Bandit 600

APT Motorcycles

[Boxing]

[Minty]

Addo?

Discarded bed in garden.

Gotta be Addo.
____________________
My fingers smell of your mum.

[P.]

I shall be watching this rebuild

[Boxing]

BTW you want a 3MB head and barrel (for more power).

Or you can get the 4DL TZR topend and that'll be all good.

The best topends you can go for IIRC.

That's if you're after power, if it's just a little run around, can go down the 3BN or similar route.

[P.]

Comes with the 3MB00 head anyway.

[Boxing]

[Minty]

Paddy, amend your signature. Unless you have another GPR?


____________________
My fingers smell of your mum.

[SQL]

[SQL]

I was planning on refreshing the whole engine seals the lot not just the bearings unless I can find a cheap engine.

[SQL]

[Boxing]

[SQL]

as stated if I find a cheap engine <£300 ill just do the topend before it becomes an issue.

however ALL engine internals will be inspected and refreshed if needed.

[P.]

PJME said they can bore that one out and skim the PV. Worked out around £87 for that and the piston/rings to go with it

[_Iain_]

Definately replace the lump.

The boy who owned it before paddy was my ex boss's son & he was a fucking mong. When he was doing the initial stripdown on it i found 1/3 of a piston ring in the expansion chamber. Which btw, if you belive him is titanium & a performance item that'll cost £2500 to replace, thats why he diddnt bother

He liked to fuck with things he had no understanding of. He then ripped it into so many bits he couldnt figure out how to put it back together & it stayed in our warehouse for a year before paddy bought it. Then this got stuck as a non started project with him...

When it worked it was a fucking nice bike. Check absolutely everything, especially the brakes before you ride it though
____________________
Please be aware that the above post may be full of complete nonsense.
Riding: '07 KTM Duke II, Baotian BT49QT-20 Driving: '88 Volvo 340

[P.]

I explained the previous owner to SQL.

Pretty much sums it up ^^^

[SQL]

[evoboy]

Rebuilding the whole engine would be just as expensive as getting a 2nd hand one that would then need a top end rebuild at the minimum.
( Most of these bikes are owned by mongs)

It would also be far more reliable, but DEFINITELY get the crank rebuilt. Dont just 'check' it, replace all the bearings and seals in the engine. The barrel can be bored out to the next oversize.

My TDR125 had this engine and it was pretty shagged out when i got it. Rebuilt the whole engine and it was a good reliable bike....pretty quick for a 125 too.
____________________
Suzuki GT250 x7------- Fazer 600------CB250RS------Aprilia Rally 70----- Bandit 600

APT Motorcycles

[SQL]

[SQL]

Progress Progress Progress

Today I took brakes off the front is binding alot! the rear pads are made of metal

Rearsets removed and cleaned, swing arm cleaned and damage filed off so that the wheel spindle is free(er) to move forwards and backwards, rear hugger removed and chain guard, also discs removed and stored for later use.

still stuck with the earth wire holding the loom in as screw is buggered, might use chisel and flat screwdriver as it is pretty chewed up.

Front radial caliper needs cleaning up but looks to be in good condition.

wheel bearings are good surprisingly but for the price of them they will be replaced.

wiring loom is all cable tied to itself so nothing gets lost.

things to do:

Remove loom, drop engine.

[Ollie1995]

How much $$?
____________________
XR 125, DT125 LC, Greeves Scottish, RS200, XS400, GPX600r

Theory Passed - 18/7/13 MOD1 Booked - 24/9/13

[SQL]

Did I pay for it?

[Ollie1995]

aye x
____________________
XR 125, DT125 LC, Greeves Scottish, RS200, XS400, GPX600r

Theory Passed - 18/7/13 MOD1 Booked - 24/9/13

[iMark]

Considering it's from Paddy, packet of Quavers and a tank of petrol

____________________
K8 GSXR 1000
"G" : you got him to have a look at a forum which seems to have established a picture of an erect penis in a cat's mouth as it's mascot and thought he might consider it ok?