jaffa

slow & steady! http://www.300zx.co.uk/forums/showthread.php?176876-2014-work-in-progress

hello again :) Time flies!

I get your point, I'm just saying there's only 1 place I would trust to open the VG and put it back together again. This is from both a track record in reliability and also consistently good results when mapped.

because VG's are very strong unless they've been abused at some point. Most of the problems with bearings going etc are usually after someone has changed a set ... If you're opening it up I would do it all and have it done properly, or leave it alone. And I would only trust one place to do it, but again, that's a different topic

I would leave the bottom end alone, but that's my view. You spend your money and you take your chances :)

Lymon is correct. It's a way of running higher boost with a weaker wastegate spring.

for the boost on the road, there's no reason why you can't do a 4th gear pull, just start lower down. My bet is that it's detting, so maybe proceed with caution!

Could be an option at a later stage ;)

Pulled this out the mould this morning :) will do another with a different core to compare stiffness and weight

Yes, 3" each. Are you going to get bigger backbox for yours? Should have 4" for a single

A testament to what you can learn from the internet!

If it's back together again I'll be at japfest for a shakedown. All being well it'll be used in anger at TOTB

New Ti backboxes arrived today :) 3.5kgs between them!!!

Also remember that scoobies evos etc have a small capacity engine in comparison and not much torque, so high power normally means lag a nd spiky power

Up to gt28 will fit depending on actuator setup and manifold used. Eg Msp/ams are good for fitment

With breather mods?

i would get a 2860 rather than 2560 any day of the week. same (better?)response, more efficient, more power potential

Here you go, key words are breather mods and head work. No, I have less lag than stock turbos. Look at where I get peak torque, and ask those who have driven my car (Noel and Jimmer) http://twinturbo.net/nissan/300zx/forums/general/view/2578880/I-can-add-a-little.html

Find and read the post ;) I would link for you but I'm on my mobile

I would get a bigger turbo than that. There's a post by gregDupree comparing tubs with breather mods, it makes an interesting read. Fyi I went from stock tubs to 3071's. Wouldn't replace them with anything but an EFR setup now

I think you're trying to boil the ocean. A boost increase alone is shocking in the difference to performance. The best thing about the VG is the torque response. A switch to manual makes the car far more responsive and raw, again a shock for people used to the auto. Then add little things like UD pulley, again a noticeable improvement. Based on what you've done, I would stick to stock tubs, 2.5" ic piping and ic's, Msp manifolds,ud pulley. Stick to a cheap 2.5" exhaust setup and get a MAP. The only reason I don't recommend 3" exhaust is that you'll need to change the downpipe again later if you upgrade tubs. 3" on stock tubs does give excellent results though. You need to decide to max stock setup, or just enjoy what you've built till you get used to it. As Tom says, a well setup stock turbo setup is mega. Nearly all the graphs in the dyno section are noticeably laggier unless you go the whole hog :D

Time to reverse the question, what do you currently have, and what's your attitude to lag?

don't be shy, stick a chart up and I'll add it :)

Nice, thought you'd been quiet!

http://www.300zx.co.uk/forums/showthread.php?170907-New-Dyno-leader-board Where? happy to discuss and give my opinion. My point being is that other than Bob & myself, no one else is remotely close to 650 at the wheels. Among the next band of 450-600 flywheel there are different combinations with varying graphs ie power/torque bands