Forums Forums StuyMac : Nissan 180SX

5 stud conversion is no done, new rear brakes have been fitted (Std disks and blackstuff pads), and the monster AP 330mm jobbies are on the front of the car



Also fitted the Tomei Cams over the weekend, but I think a few more tweeks with the timing are needed as its running a little warmer than before and I think it may be a little more advanced than it needs to be

Will be getting a timing strobe on it in the next day or so to check

such a nice driving position mate

but as i said do somethin with them back lights (c0ck-eye or wotever) they need tiniting or sumat

Slagging off kouki lights...............Blasphamy

Those brakes are hoooge. DO those calipers not touch the wheel? Bet that stops well now, Noticed a gain from the cams or just warmer running?

U dont half work fast stu

The calipers did touch the wheels, but the AP calipers are alloy, and I had to shave a few mm off the back of them to get them in (Perfectly acceptable with this kind of caliper), and it now stops really well

The car runs about 10 degress warmer with the cams in, circa 85-90 degrees and it was 75-80 before, but this could be down to running a little to much advance in the ignition timing (Cam timing is spot on) as it is maxxed out on it adjustment.

I havnt however heard an det and the advance may explain why it feels like a 20-30bhp incease in power.

Im getting a timing strobe on it tomorrow to check the ignition timing, and will move the crank angle sensor one tooth to get full adjustment back again

Just bought a new turbo for the car

Well, its covered 2000 miles, is like new and has come from a known, reliable source

Its a Garrett 2871R with .60 compressor A/R and the big .86 exhaust A/R. It made 352bhp at 1.2 bar (17psi) on the car its come from, and the turbo is capable of 1.8bar+, which with the right mods can equate to 450bhp







Its also tapped on the exhaust housing for a Defi EGT probe, and is a direct fit replacment for the std turbo, so theres no faffing round getting it to fit

Should be here in a week or so once my money transfer has cleared.

I dont know Stuy, little boys playing with Big Toys, It will end in Tears...............

(Scooby lies on the pavement banging his head against the floor as Stuy drives past pushing 400 plus horses)

I take it this turbo will boost up faster than the last turbo you fitted ?

Yeah, this turbo starts boosting at about 2000-2500rpm and hits max boost before 4000rpm, its a very good and common upgrade for the engine.

After the laggyness of the last turbo, I thought it was a good idea to go for something thats been tried and tested

Had a slight problem on saturday whilst showing a new M3 where he came in the pecking order...

At the end of a little blat down a duel carrageway I heard a loud tapping from the engine. Thankfully it was top end, and although the car ran, it was quite lumpy. Got recovered home, and pulled the cam cover off on sunday to find - to my relief:



Just a rocker arm popped off the lifter and valve - caused by the cams. I have fitted some rocker arm stoppers which should stop this, but Im thinking they may need a little modifying so that they cover the back of the rocker arms to stop this happening again.

Lost one of the shims from the top of a valve, just ordered this from Nissan - a part the size of a watch battery, and they want £5 for it Should be here Wednesday though, and I can get it back on the road and running again

Lucky matey.

Did you get the car running right after the cams went in???

Read the post on the sxoc.

Luck Stuy,
At least you knew when to STOP !

Yeah, got it running fine after fitting the cams, there was an issue (still is) with ignition timing, but I now know how to sort it when I put it back together after this little mishap

U say u lost a shim? where did u lose it? its not fell down into a nook in the head has it?

good luck gettin it running

Ive had a good look round the head with a magnet, and still not found it

As its the last valve before the back of the head I suspect its dropped down an oil way in to the sump where it cant do any harm.

The engine will get turned manually when Ive put it back together to check though

this is a bit off a guess but because the shim has come loose does this mean that the valve springs have not been able to keep up with the rpm?

Yes, which is why rocker arm stoppers where fitted at the same time, and that Im gonna check there positioning (may need a little modding) when the parts are refitted.

If it does it again, with the rocker arm stoppers in the correct position, uprated valve springs will be needed