Hi everyone, I'm looking at rebuilding my VG30DE for something a little more fun. I would like to build a high reving engine, and yes i know a turbo swap or even and rb/vh swap will be cheaper, im after something unique, and im up for the challenge. I am quite aware that this will not be a cheap build. What would be required to build a high reving engine if it is possible?
How deep are you pockets ?. And do you really just want a high revving motor or a high powered engine ?
reasonably deep, and yea high reving is what im after I like the power the car makes, I just want to be different.
+1, a 20b would be a killer combo in a Z even a 13B turbo would rock and the weight savings at the front would be enormous
If you want to increase the redline you need need to reduce the rotating mass and improve the oiling system. Very expensive exercise for little return if those are the only mods you're making...
The biggest issue is the engine already revs beyond it's ideal torque band so you'll need to re-engineer the heads and plenum to actually make any power out of the extra revs. Plus if our oil pumps are anything like the RB's it'll explode once you try and go near 8k rpm. Other than that the engine is pretty tough so just pull mass out of the rotating assembly as Rob said (pistons and cam gears) then do the usual power mods, valves n springs etc. Please do the 20b swap instead, it'll be awesome.
A waste of money But build a motor like mine with 12:1 comp 272 duration solid cams E85 8500-9000rpm rev limit Rev it any more and it wont last long
If you like revs, buy a S2000 and it'll rev to OVER 9000 stock and also faster and better handling. If you want a can of bees, B18C powered DC2 Integra, can be built relatively cheaply to rev it to 11,000rpm and it's also gonna be faster than a high rpm NA zed. Sad but true.
What about the cross flow crank and the proposed oiling issues from this at higher (7500rpm+area) I've caught mine sneaking to 7600 a few random times before, I'm sure you've gone more haha
Flick the VG in favour of a VQ35HR or better yet VQ37VHR from a V36 skyline. VQ37VHR It was the first production engine from Nissan using VVEL. It has an increased compression ratio of 11.0:1, with 3,696 cc (225.5 cu in) displacement (95.5 mm bore and 86 mm stroke), while redline remains at 7600 rpm. It is rated at up to 355 PS (261 kW; 350 hp) at 7,000 rpm and 37.2 kg?m (365 N?m; 269 lb?ft) at 5200 rpm. Although the engine gains only 0.2 kg?m (2 N?m; 1 lb?ft) peak torque over the VQ35HR and this higher torque arrives at 5200 rpm vs. 4800 in the VQ35HR, the torque curve itself is improved and flattened via VVEL variable valve timing for better throttle response and low rpm torque. Add a decent exhaust, intake and you'll be looking at a 250kw+ NA Z32 for most likely less than building a hipo (disappointing) VG30.
get a stock NA engine, put in solid lifters and valve springs raise the rev limiter to 8200 and see what happens
Solid cams and lifters JWT has what you need, head work - lots. Lightest 87mm pistons you can find. Light I beam rods. Light flywheel. Light balancer. Free flowing exhaust. 62mm throttle bodies or ITB Light cam pulleys vct your choice I would probably get rid of it for the 5,000 to 10,000rpm power band your looking for. Mafless, short intakes Os ginken gear set or sequential 4.1 diff Delete A/c ,power steering and water pump for electric Strip the interior add a cage add carbon and go racing this engine will be a dog on the street Budget $50k
I liked the whole "quick NA" thing too.... till i converted my car to TT and realised there's no such thing.
