329 replies to this topic

[VXT Tim]

It's off to Liam to deal with this time I wanted to ask you about quick release stuff for both clams, i think i remember you mentioning it a long time ago!

[-Dab-of-Oppo-]

Looking forward to seeing this!

[CKR]

Sounds brillant to me. Cant wait to see how this little gem progresses. Whats the weight implications of running this engine though? will this tip it over the 1k kg mark? The new owners keeping a low profile?!

[robin]

this will be intresting build im sure new owner will have fun in it, ill book my passenger ride in it now for next years national

[Duncan VXR]

Def sub 1k in weught. Prob more like 930-940kg

[iVXT]

Sound really interesting & will make for a very very quick car indeed. Was only a matter of time before this engine was going to end up in a vx I guess. Good luck with the conversion. Will you be going Quaife ATB for the LSD? Oh & would the dsg box be possible out of interest? Cheers.

[Duncan VXR]

Atb Dsg ecu side of things a mine field

[cnrandall]

Not wanting to sound negative but... why?!?!?! If you care that much about fuel economy then why buy a turbo engine and try for damn near 400bhp? Why go to all that hassle when you can buy a VXT that already has an engine that can match the Audi in every meaningful way? What are your plans for engine management? Direct injection is still in its infancy and I would say that most engine failures in modern cars can be attributed to problems with direct injection and after market re-maps don't exactly help that situation.

[luke.]

Not wanting to sound negative but... why?!?!?! If you care that much about fuel economy then why buy a turbo engine and try for damn near 400bhp?

Who has been moaning about fuel economy??

[14500rpm]

Why go to all that hassle when you can buy a VXT that already has an engine that can match the Audi in every meaningful way?

This. Not sure what the point is of swapping one engine for another thats virtually identical, unless its just for teh lolz.

Edited by 14500rpm, 18 October 2011 - 08:28 PM.

[iVXT]

Not wanting to sound negative but... why?!?!?! If you care that much about fuel economy then why buy a turbo engine and try for damn near 400bhp? Why go to all that hassle when you can buy a VXT that already has an engine that can match the Audi in every meaningful way?

What are your plans for engine management? Direct injection is still in its infancy and I would say that most engine failures in modern cars can be attributed to problems with direct injection and after market re-maps don't exactly help that situation.

If you looked at making a vxt engine ITRO 380bhp or this transplant which would be the most cost effective & more importantly the best driveability wise for the vx?

Also as the car in question is an NA you'd have to factor in the cost of a z20let or similar engine to start with as well.

Cheers.

[luke.]

And looms ect ect to go with the let engine

[Winstar]

Not wanting to sound negative but... why?!?!?! If you care that much about fuel economy then why buy a turbo engine and try for damn near 400bhp? Why go to all that hassle when you can buy a VXT that already has an engine that can match the Audi in every meaningful way?

What are your plans for engine management? Direct injection is still in its infancy and I would say that most engine failures in modern cars can be attributed to problems with direct injection and after market re-maps don't exactly help that situation.

If you looked at making a vxt engine ITRO 380bhp or this transplant which would be the most cost effective & more importantly the best driveability wise for the vx?

Also as the car in question is an NA you'd have to factor in the cost of a z20let or similar engine to start with as well.

Cheers.

anyday of the week it would be cheaper and easier to take either a Z22SE or Z20LET engine to 400bhp than try and engineer an engine swop.

[Hark]

lol Who build a near 400bhp pocket rocket and cares about fuel economy? Why is that even being bought up? I am really looking forward to it and looking forward to having a closer look. It's no wonder he's selling me bits if he's spending £1.2k ona turbo. lol Is it being build up with you Duncan or down here? Presume with you?

[Duncan VXR]

The turbo is already with the engine so no extra cost there. Runnung oe vag management so direct fuel injection taken care of Drive the vag range with this engine and then the vaux lump and are a world apart! How many vaux lumps are running this power without major cash been spent beefing the let/leh setup Look at how much Nev has spent and still not right, I know this is the nature of what he is doing and more power but ref costs it is a lot less than you would expect and most of the costs are for the same things needed for vaux turbo power - charge cooler, exhaust, ecu work, diff in box, etc Also nothing required to the engine other than uprated direct fuel injection pump just need servicing Chris your car apart I dont know of any/many vaux powered cars with proper control of the turbo etc DG

[Duncan VXR]

Also sorry if that reply looked a bit like I was been off - replying on the phone while walking the dog this morning is...like hard work lol Engine conversion is not really that much of a pain once the clams off imho To get a let lump to 375 spec you need quite a few things doing and dont think it would be anywhere near as cost effecting as the audi lump, agreed it still needs transplanting and custom bits but you end up with a better setup unless you spend big money on a trick ECU install like Chris one which is very expensve (but it is very good) The oe ecu is the one thing I never really liked fully wth a tweek'd vxt its just too on/off And another good point is it will be better on mpg during nice driving never even thought of that but in my old renault 5 turbo I put the audi 20vt lump in could get upto 50mpg on long motorway trips To the general bod I am sure converting the vxt lump would be a lot easer and prob more cost effective but not to 375 spec and I love to do thngs a bit dfferent and honestly believe the audi setup is years ahead of the vaux one Oh and certainly not a dig at Nev, get on really well with him and love the fact he has tried to push the limits of the let setup but was just he has recorded the costs and issues very well and highlights a lot of the vaux weak points. You can run the stock clutch at 375 f you want - I would prefer to drop the dual mass item but see what's what nearer the time Thanks for all the comments and dont worry I dont take any different views the wrong way, this conversion is not for everyone and some love to mod the oe engine in car and others like to do crazy big power build and other just like something different so thanks again for all the feedback Will try really hard to take a decent range of pics to keep you all interested DG

[Graeme Lambert]

Well I'm really looking forward to it Duncan. Just make sure you're not too busy in March to MOT and service a certain black VXT... G

[cnrandall]

Doubling the horsepower of an LET and maintaining good drivability and reliability isn't easy, swapping an engine and gearbox for another with more power isn't easy... I've done a fair bit of what is listed above and of the two I would say the former is the easier/cheaper of the two and most likely to bear fruit. Don't underestimate the quantity of small hurdles that will make this a very involved project. I'm REALLY not trying to p*ss on any bonfires as honestly I love doing this sort of stuff too, just that its important to go in with your eyes open from the outset. Suggest you price up all the components then double it and add a bit for contingency and do the same if not more for your time. Remember that although the engine will be very efficient you will be pushing the direct injection system to the max to get the horsepower and you will have little headroom for more down the line without major modification. Suggest you do loads of reading up on direct injection systems and speak to people who have been successful at modifying direct injection cars. Good luck with it guys!!

[Duncan VXR]

Chris from doing the 4 out there projects (in my world that is lol) I can 100% confirm you are right about the cost of things and the little jobs taking 10 times longer and projects never end up been an easy / quick / low cost option I know the setup and what required well and you are correct about going above the figure quoted needs some investment to get he reliability there. But am VERY lucky to have good friends who know even more and always on hand to give me advice where is required oh and having a full machine shop at my desposal and workshop makes fabrication nice and easy The more recent track beast project was completed in good time but it is fair to say a few smaller items took a lot more time than I had spare I have a new found respect for maknig panels by hand from a flat sheet of ali my arm still hurts when thinking about how many hrs I beat that up for lol Dont worry G here if you need me DG

[14500rpm]

I'm putting a LEH in an Audi A3, keep an eye out for the project thread! Good luck with the build all the same I'd just like someone to put a more interesting engine in a VX (Ford/Volvo RS 5 pot, Toyota 1UZFE, etc.) do all the hard work so I can then follow cheaply and easily in their foot steps