Well its been a bit of a sh!t storm these last 2 months.
I took the long weekend we had and fitted everything, which was accompanied by many, many problems. So many parts just did not fit, or did not fit well, forcing me to go back and forth myutliple times to sort out the problems.
And who said cars were fun? Cause idk where the hell I got that from..
Anyway, despite the bazillion hiccups I had, I managed to get it all working, well mostly. The only problem I could not fix was the cam gear i waa sent. It was the wrong one and I have no idea why I was sent it but its on its way back to rpw to be replaced. This caused my cam timing to be severely retarded as I had to go back and use the stock gear and performance really lacked due to this. The dyno graph shows this as there's a huge drop in power compared to my previous dyno with just ihe and only made more power after 6500rpm. We reved it all the way to 8100rpm and discovered that the engine was still wanting to make more power but we only pushed it to 8100rpm as it was just a safe tune until I got a new cam gear. There's a slight dip in power after 7900 but then picks back up at 8100 so it shows it still wants to rev lol. I reckon with the timing advanced it would've made a nice 105kw and somewhere around 160-170nm.
After the dyno session, I found i had a major air leak which probably account for a few ponies lost the previous night so I had to take the whole manifold off again and discover where this air leak was coming from. - it was from the return and send coolant lines on the idle control. This was causing my idle to increase massively to aeound 1300rpm, and once I fixed it I waa able to drop it back to down 800rpm but bumped it to a nice 1000rpm so the idle lump doesn't cause it to stall.
Anyway the upside was that I was able to push the car since its been tuned enough to do so. Sadly, my bottom end thought otherwise and decided to spin a bearing. Most likely in cylinders 1 or 3 as there's where its most audible. I've done a compression test on all cylinders and its all within 5 psi of eacother so it can't be piston or valve related. That's a positive in that I just spent so much on the head, a negative in the aspect I only just bloody built the damn car a month prior.
It'll roughly cost me 7k for the entire bottom end build, which is definetly a tasty build so get some popcorn ready.
For the bottom end, I've decided to go with this:
-4g94 2.0L block
-Forged hi comp pistons oversized 1mm - this'll make it a 2.1L
-Forged rods
-Billet oil gears to supply enough oil at the high rpms I want
-Fully balanced rotating assembly
-Block tunnel bored and ever so slightly decked
-ACL race bearings
-ARP main bolts
For the head:
-My billet stage 3 rpw cam will be reground to stage 5 since I can now run a domed piston for extra room for me valves
Bolt on's:
-WRX 430cc injectors
-evo 4 5 6 upgraded radiator, 2.8x larger than my current rad and is dual core over my single core rad.
-4.6xx:1 final drive ratio. This is because when I raised my rev limit so much higher than the stock 6800rpm, my gears got so much longer and causing 1st gear to be over 60kph, 2nd gear to be maxing out over 120kph. Its just way too long for a engine with no torque so this should fix it and improve upshifts as it should be in the rev range eachtime now
-Lightweight flywheel
-Stronger clutch
Im hoping with all this i can get to somewhere around 170-180whp. I reckon with the cam timing advanced on my previous setup before it spun a bearing it would've made 140whp so an even larger cam and the extensive bottom end work and 300cc extra capacity should help it to reach this hopefully. If I were to do this work with the 4g93 bottom end and make it a 1.9L I reckon it'll rev more, probably close to about 10000rpm but I think I want the extra torque so I'm going with the 94 setup. This should probably get me between 9000-9500rpm and I have no doubts about that. The head flows superbly and the short intake runners really help high rpm power, and ofc the stage 5 cam. My current cams' duration is 266 256, the stage 5 is 284 284 and the valves open and close much much later so this will be an absolute huge improvement.
I've already ordered all my parts and is currently either on its way or being made. I waa told the pistons will take aeound 3 months to arrive sadly but I guess it gives me time to prepare eveyrhing. The last thins I have to do it buy the 94 block and send it away to get machined.
My engine is almost ready to be pulled out other than the driveshafts and transmission cables so ill finish that off nxt wk
Anyway life sucks and don't modify cars.