My dads micra chain snapped after 60k.

Ross

But he was putting out just shy of 800BHP <img src="/forum/images/graemlins/laugh.gif" alt="" />

Well there is a 330bhp micra with pulsar engine up here.

Ross

I know i`ve raced it <img src="/forum/images/graemlins/laugh.gif" alt="" /> <img src="/forum/images/graemlins/shocked.gif" alt="" />

Beat ya if i remember correctly? <img src="/forum/images/graemlins/laugh.gif" alt="" />

Ross

Hi Taz (& JohnS)

Yep still float about from time to time and post the odd "Hello" now and again.

I've got an old 911 Carrera 2 (no 4 wheel drive pussy stuff for me thanks). The instant grunt from the 3.6 is quite nice but I still miss my Coupe.

As for the belt issue. I feel that the aux belt issue is one that is not taken as serious as it should be (IMHO) coz my one managed to foul the crank cam pulley but without actually breaking. Strands of it got caught in between the cambelt and the crank pulley and drew more of the aux belt into it until it stripped about 20% of it.

The sum effect was to allow the cambelt to slip four (or so) notches which took out half of my valves.

The idea I had was a simple one.

It was to press some 20swg stainless into a shape that would fit the profile of the back of the aux belt pulley (which from memory it’s out 4 times larger than the crank cambelt pulley) and cut into a disc that is about 2 inches larger in diameter than the aux pulley.

This then leaves a spinning disk (rotating at the same speed as the crank) which acts as a barrier to prevent the cambelt from picking up any element or loose strands from the aux belt and prevent a potential broken belt from being drawn in between the crank cambelt pulley and the cambelt itself preventing any fouling and protecting the top end of the engine from terminal damage.

You would have to cut a small area of the cambelt cover to accommodate it but it would prove an invaluable, cheep and easy to fit “ease of mind” mod.

Any thought?

Cheers

Matthew

sure did.............but err would like a re -try thanks,when it came up behind at about 70` ish ,I thought yup micra <img src="/forum/images/graemlins/grin.gif" alt="" /> didn`t even bother to change down from 5th,so `maybe` with having a bit of previous,I`ll be ready next time....................but it`s a bloody quick car,so not saying the outcome would be any different.


Hi Burnsy, how are you ?,you pm`d me a while back ,just an empty pm ,,ment to get back to you to ask what it was supposed to contain,but not been on her much myself,so errr forgot,sorry....................911, now there`s a nice car,I really like the new`ish 997,just bought a new business this year so all going well,maybe next year <img src="/forum/images/graemlins/wink.gif" alt="" />

Burnsy, that sounds very similar to what Barbz has just had machined so while it won't stop my car throwing belts it will at least offer some protection if it does!! I am sure there is a logical reason for why I have lost 3 aux belts in 2 weeks but it must be said that I have been lucky to escape without a cambelt disaster.

Good to hear from you Burnsy!! Can't imagine your Porker lasting long the way you drive <img src="/forum/images/graemlins/laugh.gif" alt="" />

That does sound like a good solution to the problem if the belt goes. With your design would it actually bolt onto the 6 studs or however many it is that the aux pulley is retained with?

I think the other problem is around the tensioner and ensuring the tension is always correct so the belt doesn't go in the first place (short of some external fouling).

Fiat redesigned the whole thing on the Stilo Abarths, and the aircon pump sits underneath the alternator. But it would be prohibitively expensive to swap the mounts, alternator, aircon pump etc. which would be required to make use of the new system.
I had my aux belt go on the stilo and it did not foul the timing belt. Not sure if that was luck or the different design

JohnS & PaulS

Hopefully the Porsche will be up to the challenge and live to tell the tail but I do not think that she will be concours by the time I've finished playing.

She may even end up being a track car - that way I don't have to worry about stne chips and [email]tw@ts[/email] opening their car doors on her.

I went for the 911 I fell in love with as a teenager - the 911 Carrera 2 3.6 Targa (964 version) and she is like a little tractor - agreculteral but effective.

John - Yes the disc I proposed simply fits between the aux pully and the crank pully using the holes in the aux pully to allow the aux fitting bolts to clamp it in place.

You could always fit one of those spring tensioners so that the aux belt would be under constant tension and give due allowance for pulling tension etc upon acceleration.

Anyway - glad to hear you guys are all well.

take care

Burnsy

Im just windin ya up !! That thing is killing everything up here the now due to the power to weight. Its like 450bhp per tonne or something.

Ross

Can someone not just beat it a Nissan Micra <img src="/forum/images/graemlins/frown.gif" alt="" />

Its a micra with a pulsar engine and running gear. Basically a lightweight 4wd weapon!!

Ross

I know its just the name Micra and its brings horrible images to my head, perhaps when he is not looking just take the badges off then it will all be ok <img src="/forum/images/graemlins/laugh.gif" alt="" />

Err... if it is red and won the USC in scotland, i think you will find it is FWD!

Nissan K11 Micra (March) - SR20DE+T Powered
AKA 'Little Bandit'
12.18 @ 126.8 mph and a little grip!!!
665kgs & 393.5 HP...you do the math!!!

Thats the stats. Think it is fwd!

Ross

This one?

http://videos.streetfire.net/video/ee4010d0-5b9f-466f-9a46-afd5d477d979.htm


Damn thing only has a battery in the back <img src="/forum/images/graemlins/laugh.gif" alt="" />

Interesting, been watching this thread and trying not to have nightmares! But maybe mine are unnecessary as the kappa must have a different belt - the alternator is on the back of the engine, not the front. Causes us problems every time we dropped another (Fiat origin) engine as we have to change over all the bits to the kappa ones

Trev, you should be ok matey, this looks like another feature of the 20VT engine <img src="/forum/images/graemlins/crazy.gif" alt="" />

Yeah, Flea is trying a prototype that I discussed with the Magician, which uses a VERY similar principle to Burnsys, except that the disc is press fitted to the OEM pulley, the reason being that I had a vile thought that to sandwich a plate at the cambelt end would end up causing a "slight" misaligment with the tensioner & then the power steering pulley, which in the end would cause heating & failure. Thus we have gone slightly lateral in thinking <img src="/forum/images/graemlins/smile.gif" alt="" />

It Still will not cure the static load placed on this belt, but WILL / hopefully prevent cambelt failure if the aux belt goes to shit.

All we need to do now, possibly, is to spring load the tensioner, such that is has some "take-up" under VERY heavy power / acceleration demands.

still looking for a bolt on solution, making my head itch <img src="/forum/images/graemlins/crazy.gif" alt="" />

.....we'll get there, bit like the remote oil filter kit ( almost ready to roll <img src="/forum/images/graemlins/wink.gif" alt="" /> )

cheers

Taz <img src="/forum/images/graemlins/smile.gif" alt="" />

Nice one Taz <img src="/forum/images/graemlins/smile.gif" alt="" />

How about the tensioner from a PSA XUD9TE or XUD11BTE engine?
The cambelt tensioner is quite strong from what i saw of the one on our 2.1 so should apply more than enough force to keep it down <img src="/forum/images/graemlins/smile.gif" alt="" /> I think its £15-20 from GSF as well <img src="/forum/images/graemlins/smile.gif" alt="" />

Failing that time to make up a chain maybe <img src="/forum/images/graemlins/tongue.gif" alt="" />

yup thats the one <img src="/forum/images/graemlins/grin.gif" alt="" /> and thats the same piece of road too................you can imagine the scene,I cruise past a line of traffic,middle of which I see a plain red *icra (sedici I can`t say that word either <img src="/forum/images/graemlins/laugh.gif" alt="" /> ) but do notice it has a short stubby exhaust on it,1/2 mile along the road I`m held up by traffic and the *icra is behind me, the traffic clears I stay out and get up to about 100 mph *icra still behind, I think hmmm,
I pull in and floor it ,*icra goes, screaming, banging, and popping past,what a sound <img src="/forum/images/graemlins/shocked.gif" alt="" />.

Since chatted with the guy who owns it, on another forum, hell of a nice guy, and we sort of know each other...the spec of the engine is insane and I`ll bet he is not finished yet......
the worst part of it all, was coming home to my 16 year old son....you can imagine the scene.............`anything race you today dad ? (usually he gets, yea a boxter S,or a TT,the odd 911,did you win ? always yes, or well, don`t know, `cause he/her couldn`t get past me)

so this day,he gets, yea a *icra raced me, he bursts out laughing,but he was promptly stopped, when I tell him it passed me at over well 120 !!!

oh yes, the caterpillar is almost a butterfly <img src="/forum/images/graemlins/cool.gif" alt="" />

can't wait....

about time <img src="/forum/images/graemlins/wink.gif" alt="" /> so any pics?

Finally !

It's back in my mits. I cannot at this stage thank Barbz enough for his tireless attention to detail ( takes a bow ! )

I have just managed to re-insure & MOT the thing, totally sailed through on stock injectors, 3" full system & NEW Race CAT, once it got warm the emissions literally fell away in a few secs.

oh, now the engine is so silky smooth, yup, as you guessed it the gearbox has the good old 6 sp taper bearing rattle ( that won't last long at 450hp, maybe a day or 2 ! )

so much to do, clean, detail etc, handbrake cables ( always forget one thing ! )

then it's time to polish, run her in & then get mapped. Full review to follow.

Thankyou Barbz, a real gent, good to see you also Hanny !

Oh yes, Taz...at last!!! fantastic!! congrats

can't wait to hear show she runs at full steam!!

Joe

Another coupé rises from the ashes stronger and prouder... long live Torque Italia

Well done Taz and Barbz

Who's doing the mapping for you ?

Happy b/day Jimbo

All the good un' in Jan ( incl' myself 24th ! )

...now then, yes, it will be Perfect Touch.

Still a few / lots of tweaking to do before I drop it off at PT.

must admit, the noise the 6sp box makes ( which I always thought was the engine ! ) reassures me that it will go pop very soon ! die I say !

Taz

Well done taz, how long till she is run in and you hit the rollers?

Oh dont forget nyssa has some 6speed internals

Or you can have my gearbox for free in exchange for yours and a new set of internals for me to put in it