WR1 Owners Club

666 is almost there, just Cosworth cams, clearances and the final build



666 has now got a sister and they are in love WR1 vs P1

2.5-3.0 bar if they can so no pressure then



JDM starter heads



Dye crack testing



Roughed up ports



Anti pre-ignition curvy corners



14mm studs to keep it in



Supertech valves to get it out



Finished specimens



No porting please



Just needing to fit these bad boys after they are de-burred polished



Found Rocko's new boost gauge as well

Forgive me for asking, but why aren't the ports polished, whats the thinking behind that?

I cant wait for EngineSpecialists to finish your engine Rocko, that way he will have the skills needed and have secured adequate supplier discount deals to be able to offer me a bullett proof engine for my 2k budget ol

Steveyk wrote:Forgive me for asking, but why aren't the ports polished, whats the thinking behind that?

Not quite sure if this is applicable to the specific reasoning behind this build or not, but I think it is something to do with keeping the fuel atoms suspended in the air mixture. An old motorcycle racing friend of mine who worked for BAE did some research into this many years ago and went from perfectly polished to slightly roughed up.

If the port walls are perfectly polished then you will get a far smoother air flow, however the mixture has a tendancy to seperate in the boundary layer and fuel sticks (for want of a better word) to the side, making the overall mixture lean.

The tiny surface imperfections disrupt the boundary layer and prevent a pure laminar flow keeping the fuel nicely suspended for combustion.

CAVEMAN wrote:

Steveyk wrote:Forgive me for asking, but why aren't the ports polished, whats the thinking behind that?

Not quite sure if this is applicable to the specific reasoning behind this build or not, but I think it is something to do with keeping the fuel atoms suspended in the air mixture. An old motorcycle racing friend of mine who worked for BAE did some research into this many years ago and went from perfectly polished to slightly roughed up.

If the port walls are perfectly polished then you will get a far smoother air flow, however the mixture has a tendancy to seperate in the boundary layer and fuel sticks (for want of a better word) to the side, making the overall mixture lean.

The tiny surface imperfections disrupt the boundary layer and prevent a pure laminar flow keeping the fuel nicely suspended for combustion.

Er, yeah, that's what I thought!

CAVEMAN wrote:

Steveyk wrote:Forgive me for asking, but why aren't the ports polished, whats the thinking behind that?

Not quite sure if this is applicable to the specific reasoning behind this build or not, but I think it is something to do with keeping the fuel atoms suspended in the air mixture. An old motorcycle racing friend of mine who worked for BAE did some research into this many years ago and went from perfectly polished to slightly roughed up.

If the port walls are perfectly polished then you will get a far smoother air flow, however the mixture has a tendancy to seperate in the boundary layer and fuel sticks (for want of a better word) to the side, making the overall mixture lean.

The tiny surface imperfections disrupt the boundary layer and prevent a pure laminar flow keeping the fuel nicely suspended for combustion.

Fair play Caveman .. I knew some one would hit the nail on the head ..

Nick from advanced Told me about this in the week as i asked the same question ...

All rough'd up Just like the Birds around my end ... but PASTY loves Em

Megaman wrote:I cant wait for EngineSpecialists to finish your engine Rocko, that way he will have the skills needed and have secured adequate supplier discount deals to be able to offer me a bullett proof engine for my 2k budget ol

rocko wrote:

CAVEMAN wrote:

Steveyk wrote:Forgive me for asking, but why aren't the ports polished, whats the thinking behind that?

Not quite sure if this is applicable to the specific reasoning behind this build or not, but I think it is something to do with keeping the fuel atoms suspended in the air mixture. An old motorcycle racing friend of mine who worked for BAE did some research into this many years ago and went from perfectly polished to slightly roughed up.

If the port walls are perfectly polished then you will get a far smoother air flow, however the mixture has a tendancy to seperate in the boundary layer and fuel sticks (for want of a better word) to the side, making the overall mixture lean.

The tiny surface imperfections disrupt the boundary layer and prevent a pure laminar flow keeping the fuel nicely suspended for combustion.

Fair play Caveman .. I knew some one would hit the nail on the head ..

Nick from advanced Told me about this in the week as i asked the same question ...

All rough'd up Just like the Birds around my end ... but PASTY loves Em

Caveman has it in one Keeping the fuel in the airstream so it does not seperate and cause areas of weak/rich mixture, can allow a better burn and more ignition timing before detonation becomes a problem. The nett result also means that the fuel burn speed is more stable and therefore the cylinder bmep is higher so more power for longer.

The problem with high boost is that the flame travel speed will slow down (more too burn) so so we need to keep things nicely mixed up. Don't know if your birds are like this as well Rocko

EngineSpecialists wrote:

Megaman wrote:I cant wait for EngineSpecialists to finish your engine Rocko, that way he will have the skills needed and have secured adequate supplier discount deals to be able to offer me a bullett proof engine for my 2k budget ol

Impressed with your work so far mate, still working on the missus to give me the go ahead but no joy as yet

youll wear her down in the end mate

Caveman you stole my thunder....thats what i was gonna say!!!

(Yeah right!)
Love the knowledge some of our members have on here

Megaman wrote:

EngineSpecialists wrote:

Megaman wrote:I cant wait for EngineSpecialists to finish your engine Rocko, that way he will have the skills needed and have secured adequate supplier discount deals to be able to offer me a bullett proof engine for my 2k budget ol

Impressed with your work so far mate, still working on the missus to give me the go ahead but no joy as yet

I don't know but maybe you need to give her something like for like...something with a bit of grunt. Ask Rocko, he may have a few ideas

666 so far this week, next week will be final assembly



De-burred and polished Cosworth cams ready to install



Closeup inlet and exhaust pair



New age stronger shimless buckets after polishing to prevent cam/bucket premature wear (top pair)



Final valve seat and port integrity check before final head assembly



Camshafts fitted and clearances set 8 thou 12 thou



Both heads finished and ready to be fitted to the 666 short motor



14/14mm head studs and 0.6mm head gaskets that have been reamed to take the 14mm studs but then separated to their 3 layers to allow de-burring and cleaning before fitting



Studs and reamed dowels fitted to the short motor



Head gaskets on and now for the cylinder heads next week

Without all the pics mate, you'd of been done by now!!

Bloody glad your not though, great work and even better that you have shared!!

,great thread mate,pictures say a thousnd words,well 666 words

CAVEMAN wrote:Without all the pics mate, you'd of been done by now!!

Bloody glad your not though, great work and even better that you have shared!!

I agree with the time it has taken but as you say, sometimes it is good to share and thanks for your great comments by the way

Chris 280 wrote:,great thread mate,pictures say a thousnd words,well 666 words

Talking of pictures!



The heads are now on, the cams are well lubed and we will be saying nitey nite to them for quite some time I hope when the cam covers are fitted tomorrow

I think this needs a mention. Castle Combe had a track day (open pitlane) on Tuesday that was organised by Apex Track Trackdays. I asked Rocko if he would be interested in coming down for the day to show off his WR1. He said if work permits then he would, what a gent.
He found the time to come cross country and did as he said but not only that, he also took a number of people (they were queuing up for it) for a couple of laps around the track including myself. We all agreed that his WR1 has incredible performance but also just as impressive was the handling and the way it just stuck to the track. A real super car for the road and he can drive it too.
Anyway, I want to say a massive thanks to Chris for taking the time to do this and below are a few pics that one of the BBS members took. He too seemed to love it as well.

The new 666 improved version is going to be on another planet

hi nick, what's the cam duration on those cosworth cams?
i'm lookin for some cams to fit 2.5 avcs heads(hawkeye), need to be really wild to pump enough air with a gt42-35. i've already got the oversize cosworth valves.
any ideas? thanks adam

Well worth 222 mile round trip to Blow the Cobwebs out off her ...

And she never missed a beat thanks to Nick.." Legend" For Building my 2.1 stoker .. Ill miss her .. Or Will I lol


My favorite corner of the day is Folly as its Flat out 5th .. And Old Paddock Bend as its a Mint coner if you get it right out of the esses


Thanks for the Invite ..

Well done Rocko !

I guess that if you weren't before, you are NOW a member of BBS !
My WR1 has its history down there with it's previous owner. Yours takes the mantle !

Autotecnica wrote:hi nick, what's the cam duration on those cosworth cams?
i'm lookin for some cams to fit 2.5 avcs heads(hawkeye), need to be really wild to pump enough air with a gt42-35. i've already got the oversize cosworth valves.
any ideas? thanks adam

Hi Adam, hope things are good. Kelford do a wild cam for this and I had some good feedback from a customer apart from a stupidly bad idle problem because of the low manifold vacuum, this also led to fouled plugs on occasions. They have an 11.55mm inlet valve lift but do have a slappy flank which will be noisey on the valve clearance. The spec is below:-

rocko wrote:Well worth 222 mile round trip to Blow the Cobwebs out off her ...

And she never missed a beat thanks to Nick.." Legend" For Building my 2.1 stoker .. Ill miss her .. Or Will I lol


My favorite corner of the day is Folly as its Flat out 5th .. And Old Paddock Bend as its a Mint coner if you get it right out of the esses


Thanks for the Invite ..

She will have plenty of cobwebs and dust soon and I will organise for you to clean your own car so you don't feel left out...again

You could go back up Combe after and see if Folly still works flat in 5th. Left side of the car says it wont. lol

64 hours later from the start brings us to today and almost there







Just the special Rocko pink timing belt etc and ready for dressing

She is now finished pink and powdered up ready to go in



Today is the day where the Rocko WR1 666 beast officially meets it's new powerplant and AdvancedAutomotives.com will be her home for a short time where we will remove her existing 615bhp heart and pass it on to her new victim, a P1 wanting the same thrills.But frst we had to remove our old skool projects to make way for the beast.





X Factor starts here..

http://s1217.photobucket.com/albums/dd3 ... =slideshow

Such a great read


Hope to see you at rallyday next month

Matty WR1 wrote:Such a great read


Hope to see you at rallyday next month

I will be at Rally day on the Bath and Bristol Scooby stand but not sure if we can get Rocko finished in time for an appearance.

Rally Day is an awesome day if the weather is good

I'll pop by and say hello

I'm on the SIDC stand myself

Matty WR1 wrote:I'll pop by and say hello

I'm on the SIDC stand myself

I look forward to it and I will pop over to the SIDC just incase we get lost in the crowd.

Pop over early dude, I'm the muffin man and will have team breakfasts