I didn't realise the turbo might be too small.
It had some numbers: 1.05 ex and .70 ar
and was said to be good for 800hp. just figured it would be ok for the od rev up
What would i expct in performance if the turbo is too small. Would it mean it will be spinning faster than desired?
and maybe not efficient, ie.. chopping up the air too much and making the boosted air too hot? Is that why delcowizard said to get a cooler.
Or by being too small, will it just run out of puff before i hit my redline? would it come on harder and faster than a bigger one? or would it just have bugger all boost?
My car is geared fairly high. It does over 100km/hr in first gear and has standard stall converter in th 700.
I was just looking for some extra power to get it up to 100 faster.
It would only ever get reved up every now and then. just in a hilux 4x4 mostly it will be cruising but when i put the foot down... I want it to go hard. I was thinking with a bigger turbo it would need to be revved up more to be any use. the lower in the range it boosts would suit me better so can I get this one to work or is it going to be all wrong.
Also I have been concerned with the way I built the turbo manifolds due to space.
As it is, I have a standard vn log manifold on the drivers side, I cut the outlet neck right off and welded the hole shut. Then I cut a new hole in the opposite end and made that the outlet. (I needed the exhause to come out the back of engine not front and neither vn log would work/fit as they were.
Then the drivers side exhaust goes straight down through a 2 1/2 heavy wall steam pipe and goes under the sump and heads accross to the passenger side. then it elbows up and runs right up next to the engine mount and into the bottom or the passenger side manifold. The gas enters right in the middle of the passenger manifold between cylinders 4 and 6 and is angled forward so the gas is sort of heading the right way.
The passenger manifold is just a piece of straight 2 1/2 steam pipe with short straight runner going into it.
Then at the front of the manifold it elbows straight up and flanges onto the turbo.
My concern was that all the drivers side exhaust goes directly into the passenger side manifold which may/would make the passenger side manifold have more heat/pressure in it and cause problems.
The reason I am concerned is because when the engine blew up last time, the pistons on the drivers side were ok and 3 of the ones on the passenger side had the tops busted off.
Could this just be a coincidence or maybe caused by having 2 sets of magna injectors that may flow different and leaned those cylinders first (dont know which injectors are where coz the all looked the same) or by my manifold design.the cylinders that busted pistons were 2, 6, 8. and a couple on the drivers side were cracked. All damage was in the exact same spot on each of the keith black cast hypers intake reliefe valve side and corner out of ring land. Have been told that those pistons are shit and come racing don't use them anymore. (was made like this due to no room to do it like most commodors do with the 2 seperate pipes and running around the front and into a y piece before the turbo.
any thoughts on this?
split a bore and busted 3 piston tops and cracked a couple of others before i could blink. the blocks been in for a sleeve job and rebored, hope she hangs together this time.. this is my first tune and first turbo build. Live out on a farm and need to rely on the net for info about everything. no one in this small town knows anything.
four hours drive from where I am. I spose you dont have much choice but to learn it yourself when nobody around can do it.
