18-06-2012, 10:52 AM
So a few of you popped over this weekend and asked how my engine build etc was going. Basically, waiting on a few bits arriving. The head is all done, all gas flowed, big new valves and higher lift cam all set up and ground in. The head has gone off for ceramic coating on the exhaust valves, exhaust ports and precups - that should all be ready in a couple of weeks.
Gearbox is cleaned up, and converted to the XUD style (rather than HDi) clutch mechanism and I'll be popping the Quaife Limited Slip diff in it in the next couple of days. The clutches have been ordered from Helix and just waiting for them to pull their finger out and get them delivered to me ASAP!
My biggest problem is the bottom end - and why the whole build has been delayed much further than I'd hoped.
One of my pistons got damaged (or there was a forging error) so I'm waiting on a new one arriving, sadly because they are coming from the states it could be 4 - 6 weeks.
The rods are done, and are of I beam configuration with custom big ends to suit my custom long throw crank... not QUITE sure what to do about the big end shells yet, as while the forgery supplier some I've been thinking about getting a set of tri-metal ones as used in the GTi-6 with boost etc. Some more thought required there I think.
The block is cleaned, and has been bored out to suit the larger diameter pistons and modified to take the crank all it needs now is painting really (seems the done thing!!) and the bits putting in it.
I've got a VE pump stripped down and ready to rebuild, but I'm hunting around for a 10mm head with not a lot of luck at the moment... I might just have to bite the bullet and join the 11mm crew - I just don't like the smoke so again, a bit more work required around that.
What I do need - and hope someone can help me with, is a set of injectors? I need to send them off to be modified / reconned and at the moment I haven't got any - let me know if you have as I have cash waiting.
Last piece of the puzzle is the turbo.
At the moment I'm running the same GT25 as I have been for 18 months, with the 56mm compressor wheel and titanium internals. I had Brynllwynog2 run a few calcs on how this will perform on the new motor, with it being bigger capacity etc and it looks like it should spool up MUCH earlier... like around 2200rpm which is good - however it getting pretty close to choking at 2.2bar boost at the red line.
This has led me to a bit of a dilemma... do I enjoy the earlier spool or do I get the turbo taken out to a 59mm comp wheel, have some exhaust turbine mods done and go back to 2600rpm spool but so it will rev out much better at 2.2bar and upwards???
I'm thinking at least for running the engine in, leave the turbo as is (as I will only be running a 9mm pump anyway for the moment) and then make a call as I start to turn up the wick.
That's me up to date!
Cheers,
JP
Gearbox is cleaned up, and converted to the XUD style (rather than HDi) clutch mechanism and I'll be popping the Quaife Limited Slip diff in it in the next couple of days. The clutches have been ordered from Helix and just waiting for them to pull their finger out and get them delivered to me ASAP!
My biggest problem is the bottom end - and why the whole build has been delayed much further than I'd hoped.
One of my pistons got damaged (or there was a forging error) so I'm waiting on a new one arriving, sadly because they are coming from the states it could be 4 - 6 weeks.
The rods are done, and are of I beam configuration with custom big ends to suit my custom long throw crank... not QUITE sure what to do about the big end shells yet, as while the forgery supplier some I've been thinking about getting a set of tri-metal ones as used in the GTi-6 with boost etc. Some more thought required there I think.
The block is cleaned, and has been bored out to suit the larger diameter pistons and modified to take the crank all it needs now is painting really (seems the done thing!!) and the bits putting in it.
I've got a VE pump stripped down and ready to rebuild, but I'm hunting around for a 10mm head with not a lot of luck at the moment... I might just have to bite the bullet and join the 11mm crew - I just don't like the smoke so again, a bit more work required around that.
What I do need - and hope someone can help me with, is a set of injectors? I need to send them off to be modified / reconned and at the moment I haven't got any - let me know if you have as I have cash waiting.
Last piece of the puzzle is the turbo.
At the moment I'm running the same GT25 as I have been for 18 months, with the 56mm compressor wheel and titanium internals. I had Brynllwynog2 run a few calcs on how this will perform on the new motor, with it being bigger capacity etc and it looks like it should spool up MUCH earlier... like around 2200rpm which is good - however it getting pretty close to choking at 2.2bar boost at the red line.
This has led me to a bit of a dilemma... do I enjoy the earlier spool or do I get the turbo taken out to a 59mm comp wheel, have some exhaust turbine mods done and go back to 2600rpm spool but so it will rev out much better at 2.2bar and upwards???
I'm thinking at least for running the engine in, leave the turbo as is (as I will only be running a 9mm pump anyway for the moment) and then make a call as I start to turn up the wick.
That's me up to date!
Cheers,
JP
JP