astra boosted derv

[Dervy]

The engines governor will start would around 4400rpm and fully kick in around 5000rpm. My experience tells me that you need to raise it to get the turbo to boost any way near full in first and second gear. I found mine very laggy when I originally fitted my T25 set because the fuel was cutting off by the time the turbo was working. I say to this day the best modification on mine was to raise the max governed speed too about a 1000rpm higher than original. Still doesn't achieve 25psi in first but it does in second where I was lucky to get 15 before. You don't have to rev it higher either. You can still rev it to say 5k. Just means it will still be putting a proper amount of fuel through!

how many shims did you put in when you did your governor?

[Dervy]

first of i will apologize this is going to be fairly wordy.

ok peeps there is a reason there has been no updates. unfortunately the new head gasket did not sort it out, and after a couple of weeks of driving it with it boiling up on nearly every journey i got fed up and decided to take it of the road so i could do the job properly.

when i told my brother i was taking it off the road he said i should try and do the modification that i'v been bin researching for the past couple of years.

so here is project 16v

went scrappy and got a 16v valve head and pistons from a y17dt engine and started the long and disgusting job of cleaning the head up, as you can see its bloody filthy.
here you can see the awful design of the standard inlet manifold.




for soom reason four of the inlet ports are blocked of almost completely, by a restrictor plate


here it is with the plate removed



here you can see the rather poor inlet port design






nothing a bit of grinding can't sort, didn't go to mad, just smoothed it out a bit

[Balley]

This was my next step. So glad you are trying it. Take it you are using the VE pump with the 16v injectors and pipes rather than the VR pump?

[Dervy]

right now back to the cylinder block, i decided to have it skimmed. so i stripped and sent it of, turns out it was not flat but the bloke did a cracking job of skimming it. only problem is i didn't check the cylinder bores before sending it off, and they turned out to be so badly pitted that i had to scrap the block.





sorry no pics of the pitted cylinder bores, i was not in the mood for taking photo's when i found

instead of wasting time trying to find and remove another block, i had the nice chaps at the scrappy do it for me £150 later this is what i got.
complete engine with turbo, fuel pump and even the aircon pump, all lovely bits that i can sell on, as i won't be using them.




these make stripping engines very easy and quick



heres my stage 2 uprated clutch




old pump on new engine



bottom end in, i didn't use the oil filter/ oil cooler housing from the y17dt as it got in the way of the custom inlet manifold that i was making.



mocking up the turbo




heres that custom inlet that i was talking about

[Dervy]

messed up a bit and had to make the runners longer







no pics of the head going on cus i just wanted to get it done, but here is some pics of the sexy down pipe

[Dervy]

here it is all together

[Balley]

Awesome!

[burgo]

Yes your welcome

[Dervy]

i paid you beer

[pie]

sweet as dude