rd125lc engine rebuild

[grunt]

decided that i have the money put away and now its time to spend abit

so i have purchased a 175 autisa big bore kit a 26mm powerjet carb going to be faron tuned, head is to be machiened to match barrel .got all new oild seals and bearings for £91 ;D

had engine cases vapour blasted and some paintwork done

heres the piccys

[mellow]

OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOH ;D

[jasper2608]

where did you get the autisa big bore kit and how much was it ive been thinking of doing the same for one of my bikes

[Norbo]

Its looking smart mate and it will be fast now.

[grunt]

done bit more to the beast now ;D

all new oil seals and bearings fitted to it

few more piccys now i gotta wait for the barrel, head and crankshaft back

[lcowner]

those 125 engines are small!!!!!!!!

[grunt]

just makes it easier to rebuild less components ;D

[Norbo]

I think id try and linish them welds down on the clear clutch cover with a sand flapper with scoth pads in between. .

[carlos]

Jul 30, 2010 9:50:00 GMT 1 Norbo said:

I think id try and linish them welds down on the clear clutch cover with a sand flapper with scoth pads in between. .

I agree Norbs, just didn't want to bethe first to say it and I couldn't have made it that good!

[grunt]

right i willl look into that further

get some stuff from work tomorrow to sand it down with

not gonna go the powder coating option at money is tight
i willl make it look good either way

also managed to convince my mum to let me build my engine in my bedroom as long as its clean

few more piccys
gearbox cleaned reassembled and put back in then just got other parts cleaned up boyseen dual stage reeds ;D

[grunt]

ill be looking out for u on sundays ;D

got couple more bits im bringing over next week sometime

i will do that case for everyone as im now outnumbered ;D

well will post some pics tomorrow or tonight of how i got on

[twostroker]

if your going to paint the casing id give the welds a skim of chemical metal or maybe just sand them flat depending how much metal you have got to play with?

[grunt]

just finished doing the case little bit more before its perfect but help is at hand ;D just touched it with alittle paint to see what it looks like i think i was wrong and should have listened looks much better

gonna get it vapour blasted and repainted by tony next week will update when done

just got back from tonys earlier gave him the case and said work some magic please so he did this is it all primered are ready to go black tomorrow will post the finished pics tomorrow night when i get home ;D

[twostroker]

looking good fella,are you going to get in rolling roaded after its all run in?should make decent power when its all set up

[grunt]

nope not gonna get it dyno'd i think id rather say yes its fast ;D

well i will update pictures tonight with the case tony has really worked wonders with the case its like black chrome used loads of laqure like a mirror

now to get barrel and crankshaft back and to get building

[Norbo]

Looking well trick mate . and Tony will do a top job i know.I cant wate to see them finished.
We did have a crash a couple of weeks back mate and every post back to the 1st of July was lost. all new members everything was lost . people had to rejoin and everything. Your pics got lost with every one elces inclooding everything i posted as well sorry about that.

I realy cant wate to see that lump fitted in the bike .

[grunt]

right now as you all egged me on to do this case and tony seemed to know how to make it look i gave it to him and said ok work some magic make it special ;D he perfected it that much even rounding off the corners of the bit i had built and welded on,, he put so many coats of laqure on the case i couldnt photograph it that well thats why the pics are at angles

so whilst he was doing the case he gave me the joyfully task of tightening and test riding this freshly rebuilt fizzy that i have helped build afew weeks ago






grunt

[Norbo]

Agreed it does lok like it was made that way . Im so glad you grined back and coved up the welds.

[grunt]

right now for the difficult bit im planning in advanced

modifications are as follows :

micron bean can
boyseen dual stage reeds
180cc big bore kit
br9eix sparkky plug
foam pod filter
26mm power jet carb

now what jet would be a good starting point so i can stock up on the jets ;D ready for jetting

[mellow]

that casing is f**kin mint m8!! really top job

[grunt]

not bad for free

i help tony and he helps me out so i had the cases vapour blasted and the 2 casings and head painted ;D best of all i have a laugh riding the fs1e's round the business park helping decide colour schemes like the project x rd aircooled bike and the special fs1e of tony's

[LC'Adam]

When do you get your pot back grunt? hope you put some pics of it up. Jetting might be a tricky one, bean can may not perform at its best when you are running a 180cc cylinder and powerjet carb. Have you considerd have one made?

[grunt]

well spoke to few poeple who said they had done it or mates had done it in the day so i think i will give it a try and then i will go from there as my pockets aint very deep atm ;D as long as it goes relativly ok i will be happy as i has to be better than standard i will ask mr faron as well then see how things go ;D ;D ;D

grunt

[billy]

Really impressed by how the casing turned out.

[carlos]

If you want the casing photographed properly Grunt, give me a shout and I'll pop down!

[grunt]

thanks for tht carl i got a better camera now gonna vapour blast the carb and blow it through with air next week so its spotless

get everything back by next friday - or monday depending on courier

grunt ;D

[grunt]

right been reading around and i have heard afew people leave the balancing shaft out what does this do to the engine

grunt

[grunt]

right ok then thats going in i dont wanna feel like im riding a vibrator every time i go out round town ;D ;D

now to sort out what ajustment to the oil pump wether just to turn minumim stroke up so its higher all round or to ajust the shims so i pumps more oil through

[billy]

Aug 9, 2010 2:42:33 GMT 1 garyrdrobbo said:

usually removing shims allows the minimum stroke to go higher thats one option as a starter.
if not fit a 350 lc one and blank an oil line off.reason i say that as the 350lc pump delivers the correct amount for 1 side per line and is basically 175cc a side

But if you block one output hole, won't it spit out the same ammount of oil through the remaining hose?

Think of it as a fountain, sometimes there's water coming out of several holes, but if you block holes, the water pressure will raise on the other holes which are not blocked. Just a thought, I have no idea how a 350 oil pump works lol..

Edit: A solution would be to direct one of the output hoses back to the oil tank.

[grunt]

right i have spoken to ron and faron and he has told me he has done several 175 rds and said i can use my oil pump and to be 100% if im still not happy with it to put 2 fluid oz's bout 60millilitres of oil in the tank as gaz stated

as for the jetting he said to go for a 240 and work my way down with the jets till its ok,, making sure it runs rich so it doesnt seize

now moving on with an update of the engine parts here is the carb after vapour blasting