ant wrote:what you got so far Jon ?
what are you doing manifold wise dude ?
I got the manifold about two days ago off an omega 2.5td, also known as the 525td engine. The ports actually match up better than my estimations, with only about 1mm needing to be shaved off some of the ports.
The bolt holes are similar(if not the same as the 524td manifold) so the top bolt holes will be fine, but i'll have to do notches like the jdturbocharging bloke.
The thing is that the exhaust/turbo flange is not your generic t3 i believe, it has three bolt holes and i believe that the port is a fair bit smaller. There is room for increasing the size of this quite considerably. What i think i'll have to do is get/fabricate an adapter to convert a t3 to fit as these are the most commonly available turbos. A TD04 looked about the right size so currently i'm trying to find dimensions for a variety of turbos.
So if anyone knows what flange size is on a e34 525td manifold i would be very greatful!
The other thing i've got/in the post is those injectors, but whether this will cause it to overfuel all throughout the rev range i'm unsure, a bit of trial and error with this project!
Other things i'm considering getting are:
A 325 downpipe, cut the two pipe fitting off so that you turn this around and it will bolt to the original downpipe and then fabricate this into a single pipe with some help from pipe off cuts and a welder!
A thicker head gasket, i will probably purchase one if i take the head off to make it easier porting the head-so in turn new non-stretch type head bolts.
Things i will need:
A FMU to increase the fuel pressure with boost, i think that the 'americans' got good results using 12:1 ratio.
Oil feed and return lines, but working in a dealership i might aquire these of something like an astra diesel turbo-they are actually wuite cheap-More thought required on this.
Charge piping is going to be essential obviously, and i'm on the look out for any that is getting thrown out or not used.
An intercooler off something like a rover 800 or bigger, again this is for cost purposes.
And loads of other things i've forgotten, i've got a nice loooong list at work.
I was considering getting megasquirt, but i'm gonna see how i get on first, and i'll probably find it runs real rough if it ever does run and then i'll consider getting megasquirt. Am i right in thinking megasquirt gets its info. off generic GM sensors or alike??
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