View Full Version : Willey Engine mod's
Any one know what the bottom end's good for BHP & rpm wise? (in balanced state).
Also, forged pistons & rod's. JE, Welco, Eagle etc. dont seem to cater for the willey at first glance, any ideas?....
Cheers, New member,
Jonny
Clio_GTT
10-01-2006, 21:54
http://www.williamsclio.co.uk/forum/viewtopic.php?t=7498&highlight=rally
have a good read
u'll need better cams/headwork/valve-gear to rev beyond 8000 and produce decent power...no matter how good the bottom end is.
mines got balanced BE, Accralite forged pistons, and detailed standard rods. TBH i dont want to take it past 8000 without H-section rods.
ideally u want a steel short throw crank aswell, then it would really scream
Justin..
10-01-2006, 22:03
i've no idea but welcome :D
Cheers mate, intresting read
Cheers mate, Cam's, head (machined port's & combustion chambers), throttle body's, inlet stack, airbox, pistons, rods (H section steel forged), programmable ECU, Alu fly wheel all full lightend and balanced were all intended any way. Just wondering wether to make a billet crank too!
Would like to keep the long crank as I'm trying to retain as much low end torque as possible + more det friendly + makes for a more efficient engine & don't have to experiment with L/R ratios,
hello and welcome!
one day when i win the lottery i will get all of my engine done lol
:lol:
sounds good, similar spec to mine (minus ally fly, tho mines reduced to 5kg from 7.5, and the H rods).
what head you planning on using? if your planning on larger valves you really want to use the megane head.
also with the short throw crank, you will have problems getting disp back to stock levels due to minimal distance between bores
Presume the williams fly is same as the RSi fly, where ca you get an aly one from?
will be specially made. get on CAD and draw one, then take it to a CNC specialist
Wish I won the lotto too! could give me more time to tinker!
Was going to use willey head, but thats only probably due to lack of knowledge.... :roll:
Looking at buying the project engine at the mo, would the willey not be the one to go with then?
Yeh, Design & make most of the stuff myself. Have a few useful friends too to help me with the FEA side of things etc.
if you havent already got an engine, get a megane 2.0 16v F7R. or if u have a willy F7R, i have a megane head i can sell.
megane head has parallel entry to chamber and smaller, nicer inlet ports. F7P/R has HUGE inlet ports! hence my prefernce to the meg head for my big-valve head.
you should especially consider this if you donw want reduced low-down performance. really depends on Cr, cams, valve timing aswell, but i would opt for the megane head if i were you.
FEA is great, used it on IDEAS extensively. designed con-rods and cranks at uni!
why not make some custom pistons mate? £££ maybe, but you will have control of tolerancing and chamber design
What, you mean get JE or some one to make, or make myself?...
Ideas is cool, use it for CAD CAM, nice un easy!
well i bought mine, and literally 3 days after i ordered them (before they arrived) we had someone come round that manufactures race pistons, and they would have only been 70euros each!! lead time of 18weeks tho! and a minimum order of 20 iirc! got me thinking tho, i may consider looking into custom pistons for the next build.
cool, you done much engine simulation? Riccardo Wave?...GT Power?
Ok, can someone design and make me an ali fly.....maybe when you do yours jonny......just give me an idea of cost first
How much would full build like described above actually cost? :shock:
Nah, not yet! still on a learning curve. I'm a machinist really, but trying to develope my career un get into engine R&D stuff.
Where do you work?...
Lunner, keep your eyes pealed for post's in 2-3 months. It's a way off yet but when I do mine, if the price is right, I'll do ya one too. No idea on price yet though, will have to find out material cost's, balancing cost's etc.
Dunno, if you where to pay somone to do it, a F**king fortune! I dont intend on spending much more than 2.5K though
you'd be better off looking at a "slotted" steel flywheel.
aluminium isnt a suitable friction surface, and you will have to look in detail at integrating a steel surface on an ally body for the clutch.
mine weighs in at 5kg compared to 7.5kg stock. and thats from removing the trigger pattern and some work on the back. so if u ca include some slots, im sure it will be light enough. mine revs like the flick of a switch as it is!
Was speaking to a bloke who has his own engineerring company and drag races cars, has done for about 30 years and he reconed an ali one was superior over a steel one.
Presume the clio fly wheels are steel and not cast
Frightend of it bursting though... I would intergrate a steel frictiobn surface, and feel more comfortable knowing the spec of the material and designing accordingly.
You realy think Alu is a bad idea....
The std is cast isn't it? or have you had a steel billet one made?
Well he was saying if its cast he recomends getting a steel one as they are alot less brittle, for the dray racing you ahver to have a real strng, certified bell housing to contain teh fky wheel if it explodes
least it would my pasanger that gets it if it does go!! he he (actually, not nice thinking about!)
flywheels are cast
Lunner have a search on google for Fidanza
as stan says you can't use a 100% ali flywheelm you would have to use steel inserts on an ali flyweel (which are replacable)
Jonny we use Wossner pistons, you're looking at around £490ish
i can't remember the comp specs off the top of my head
This kinda engine work is NUTTS! Big respect to anyone doing that kinda work. I'm gonna be happy with a rebuild with headwork and some wild cams and an ecu! should be good for 185-190bhp! next step will be ITB's after that! :twisted:
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