Now have the mongrel back in my possession. Running surprisingly well for a car which is still on an old map but now has a brand new big turbo and a performance cam inside it.

Power is probably up by about 10bhp - estimate of about 230bhp now. Delivery is much different to the VT2 - When it comes on boost it takes off like a rocket, with a much sharper high pitched shrill whistle from the turbo. It still smokes on full chat - like a TRAIN, but this is expected with it having an old map, and also having had a forced ECU reset again. Not running it with gas either - that needs sorting out first.

All in all, very chuffed! Also very glad I'm not having to limp it around until I get back to Jabba - it does run surprisingly well on their old map.

Sounds Good Jason. What do you reckon the Max BHP could be? and how many horses are you aiming for.........300.....:eek:

aiming for.........300.....:eek:

Or just a smidge below.

Ah good to hear! Keep up the good work jase!

Looking forward to it, nice work so far

Your car sounded sweet down the slip road have you got the CDA fitted now?

Your car sounded sweet down the slip road have you got the CDA fitted now?

Nope, sticking with standard airbox and pd160 intake now. Been told basically the induction kit is not necessary.

great stuff Jase! You be de man!

Nothing sounds sweeter than a turbo - the louder the nicer!

Apparently the VT5 turbo is a non-hybrid VNT 20 (both the turbine and compressor are VNT20) as opposed to the hybrid VNT20 (the turbine is a VNT17 but the compressor is a VNT20 one). Needs a bespoke manifold to mount, as the VNT20 hybrid has the cast-in manifold already there.

BTW - Do you notice more lag now mate?

Cheers

Bas

Apparently the VT5 turbo is a non-hybrid VNT 20 (both the turbine and compressor are VNT20) Bas

Interesting. Where did you find that out? Do you know which vnt20 its based on? 2052 ot 2056?

wow!

with night-on 300bhp, what's the economy gonna be like?

Tell me more about the cam please

Great One, I'm gobsmacked at an estimated 230BHP:eek:

Keep up the good work!.

Or just a smidge below.

A smudge or two surely, with all that soot and smoke....

Interesting. Where did you find that out? Do you know which vnt20 its based on? 2052 ot 2056?

You'd have to contact someone called Miguel in Portugal to find out exactly......

The bespoke manifold and the Variable Turbine configuration are the giveaway....

I ain't saying another word.....

Have you got injectors modded yet to get the most out of this. You could always get the pressure up on the PD pump, i hear they can run upto 6700psi

watching for those figures with intrest. good man.

Cam lift and timing Jason? Sounding good so far.

Have you got injectors modded yet to get the most out of this. You could always get the pressure up on the PD pump, i hear they can run upto 6700psi

Not sure what you mean on that. :confused:

The cam... Hmmm, well, I never saw it and never really truly found out it's actual effect, but what it should do is provide me with a little more fuelling - possibly by keeping the valves open longer - all together, I'm not sure but I just knew I wanted one. I don't even know how much I paid due to the job lot nature of the bill. But around £500-£600 all in is realistic, which includes the cost of 8 new cam followers @ £130.

Edit: And as for the turbo, it probably is based loosely around the VNT20, but the fact they had to fit modified downpipe connection, and also the exit from the turbo shows that some serious work has gone on internally. I've not even seen it myself yet....

does the cam not let it rev higher? I know they do in petrols...... but the big iron engine limits revs in deisels........ maybe with the new map, higher revs/power can be acheived?!

Im following this too... both on SCN and on here...

this is something i am aiming for at the end of the summer

I'm following this with interest too, although I have a little way to go to catch up See, I'm wondering if devonutopia is aiming to be the next Stig... :rubchin:

Glad you're happy with it, Jason

Regards

Mo

does the cam not let it rev higher? I know they do in petrols...... but the big iron engine limits revs in deisels........ maybe with the new map, higher revs/power can be acheived?!

Revs in diesels are limited by the burn time of the fuel. Compression ignition means you can't alter the timing, i.e. advance the ingition of the fuel. So as the revs rise the fuel has less time to burn. Pumping more fuel in has no effect, and leads to the smoke tuned diesels are often afflicted with, with the unburnt fuel being exhausted as soot........

Interesting thing about the cam and injectors in relation to more fuelling.

You get more fuel by having the OEM ones stay open for a longer duration, a cam may help a bit but timing of the complete delivery is important to complete combustion.

Uprated injectors deliver fuel faster, so need a shorter duration to deliver the same quantity of fuel- 20% increase in flow is quoted by the people doing the upgrade in the US.

Cost for uprating all 4 injectors is 410 quid (kermatdi.com), couriering your own back and forth not included.

I'd think that getting the injectors uprated would be more important, and cheaper than getting a cam. Removing and re-fitting injectors is well within DIY realms IF you are careful and have a caliper to measure that they are in to spec.

I have been told by a top tuner that the standard cam is pretty much maxed out - I was told that if you look at a diesel cam it is very sharp in profile compared to a petrol one (ie "aggressive").

NOT being critical at all - merely my 2p worth.

Bas

IMO the nature of the standard engine is such that the cam won't be (well shouldn't be) optimal for work higher in the rev range.

The bigger turbo will puff higher, higher in the rev range so changing the cam for one with a little more duration and/or overlap could be the way to go.

Jason, incidentally, what revs are you using with the car? I've read of cars pulling heftily to 5.5K which seems a world away from the way mine is now, even though mine is remapped. My brother's 106 diesel used to go to 5.5K pretty easily though incredibly slowly.

J.

Jason, incidentally, what revs are you using with the car? I've read of cars pulling heftily to 5.5K which seems a world away from the way mine is now, even though mine is remapped. My brother's 106 diesel used to go to 5.5K pretty easily though incredibly slowly.

J.

Feels much nicer going to 4.5k now, but I'm still on the old map, so will not realise true rev potential until end of April time. Feels a lot better up top though - Just like the engine is breathing a lot better - not so strained, and not too smokey at the top end either.