Will it work?? I don't see why it shouldn't?? (new member!) - page 1 - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Will it work?? I don't see why it shouldn't?? (new member!) by LregG on 16 May, 2008 15:05
• Hello guys and girls, how are we all??
  
  A little about myself before we get down to why i am on here, my name is gregg, i'm 31 and i live in the UK. I've been into VW's for many a year with my main passion being for polos.
  
  I currently own a 1980 mk1 polo that is running CBR 600 motorbike carbs on a 10:1 C/R 1272cc 8v crossflow that is running around 100bhp that weighs 685Kg. I also have a mk2 "breadvan" in beige that was running a G40 engine with a T25 from a saab 9000 runing 21, yes 21psi boost giving between 190-210bhp in a car that weighs 760Kg. Go to youtube and search for "the beige beast" to see it in action.
  
  WHY I AM HERE>
  
  Right, in germany the mk3 polo was available as a diesel but not in england, however the same engine can be found in england in a seat terra van, odd but true. I bought a seat terra with 28k miles on it purely for the engine. The engine code is 1W which is a naturally aspirated 1398cc 22:1 compression ratio 8v crossflow diesel engine.
  
  Why am i telling you all this??
  
  Well, my plan is to fit a golf GTD fuel pump and injectors and run a GT15 turbo at around a bar boost on it as it turns out that the GTD engine is around the same compression ratio (is that right??) so i'm guesssing it should not be a problem?? The turbo is off of a saab 9-3 that would usually run 115bhp so i know it will flow well enough.
  
  I also have a chargecooler that will be used (under bonnet space is limited in a mk2 polo!) along with an oil cooler and the car is already fitted with a 2.5" exhaust system. The exhaust manifold will be custom made as well a 2.5" downpipe so i'm hoping for good results.
  
  Do you think it will work?? If not, why not?? I know you gtd guys fit 1.9 pump and injectors to your 1.6 engines to allow more boost to be used so i'm thinking the 1.6 turbo pump and injectors on the 1.4 engine will work  in the same manner??
  
  I've played with petrol engines as far as i think i can, carb to injection, supercharger to turbos etc but i've never played with a diesel myself so comments from more knowledgable people than myself are more than welcome  
  
  Also can we keep this on here only please people as if it can and does work then i think this will be a first in the U.K.
  
  
  
  Thanks for your help in advance
  
  
  Gregg
• #1 by myke_w on 16 May, 2008 16:49
• if it all bolts up, it should be fine.. I've never even heard of a 1.4 though..
  it is a 4 cylinder right?
• #2 by jimfoo on 16 May, 2008 19:40
• 1.4 is a 3 cyl I believe.
• #3 by Vincent Waldon on 16 May, 2008 21:48
• I thought so too... except that he also says "8v".... so now I'm not so sure.
  
  Either way, with cooling and proper oil and strong headbolts and gasket it should hang together reasonably well... if the manifold bolts up !!
• #4 by LregG on 16 May, 2008 22:55
• Cheers for the replies guys   , it is a 4 cylinder, here is the specification borrowed from carfolio > http://www.carfolio.com/specifications/models/car/?car=24948
  
  Volkswagen Polo/Seat terra 1.4d Specifications
  
  Engine code: 1W
  
  Bore × stroke= 75.00 mm × 79.10 mm (2.95 in × 3.11 in)
  Cylinders 4
  Displacement 1398 cc (85.311 cu in)
  single overhead camshaft
  2 valves per cylinder (8 valves in total)  
  Compression ratio 22.30:1 (golf gtd is 23:1??)
  Maximum power 48.0 bhp @ 4500 rpm  
  Maximum torque 63 ft·lb @ 3500 rpm  
  Main bearings 5
  
  A few points that i hope will make this little project work and work well??
  
  1) This engine uses oil jets to keep the pistons cool (same as the gtd i have heard)
  
  2) The head bolts are bigger and more manly than used in all of the other petrol polo engines (including the G40)
  
  3) The head gasket will (hopefully) be the metal one used from the later 1.4 16v petrol engine if it proves to be thick enough and the head bolts will fit through it, with careful modification if need be
  
  4) The engine oil will be kept as cool as possible with my front mounted oil cooler fed from my oil filter relocation kit used to allow the use of the larger golf oil filter and to save valuable under bonnet space
  
  5) Inlet temps will be kept as cool as possible with my modified golf 20v turbo chargecooler from jabbasport (heard of them??)
  
  6) The downpipe and exhaust system will be in 2.5" stainless
  
  7) The golf GTD fuel pump and injectors will suppy enough fuel for what i have planned (i hope)
  
  8 ) The exhaust manifold is the same fitment as all the 8 valve petrol engines so i can easily adapt one to make use of the GT15 turbo that i already have
  
  9) The turbo is usually found on a 2.3 litre diesel that produces 115 bhp at 0.9 bar boost so it should be spot on for what i want to acheive
  
  10) If possible, i would like to fit the air filter directly behind the grill for as much cold air as possible for the turbo feed off from. I may even try to make a heat shield/air filter box to help matters further
  
  11) I'm thinking of welding a larger inlet plenum to the polo inlet manifold as the polo one will be restrictive in a turbo application. I'm thinking the 20v turbo one i have will do nicely
  
  What do you guys think?? Have i missed anything??
  
  
  Thanks in advance
  
  
  Gregg
• #5 by LoneWolf on 17 May, 2008 00:10
• hey dude, Rubadub from ClubPolo here
  
  
    have you thought about going down the other route? usinga mk4 Polo 1.9 block and adding a turbo to that?
• #6 by LregG on 17 May, 2008 00:29
• Quote from: "LoneWolf"

  hey dude, Rubadub from ClubPolo here
  
  
    have you thought about going down the other route? usinga mk4 Polo 1.9 block and adding a turbo to that?

  
  
  Hello mate, no, i hadn't thought of that to be honest. The thing is that the gearbox will be a weak link, especially 5th gear what with all the torque the 1.4 engine will produce, let alone a 1.9
  
  Keep this quiet though yeah  :wink:
• #7 by gigaz2 on 17 May, 2008 04:34
• I saw a post about one of these with a supercharger AND a turbo somewhere..
  
  you can't use a GTD pump, it turns the other way around. all you can do is try to make a fankenpump out of the two.
  
  ps: your breadvan seems.. slow, or is it the footage tha makes it appear that way?
  take a look a this one: http://www.youtube.com/watch?v=H6BkuTHcpIQ
  its from a friend, this was one "weak" stage, after that it got toothed pulleys and a few other tricks.
• #8 by LregG on 17 May, 2008 04:57
• Quote from: "gigaz2"

  I saw a post about one of these with a supercharger AND a turbo somewhere..
  
  you can't use a GTD pump, it turns the other way around. all you can do is try to make a fankenpump out of the two.
  
  ps: your breadvan seems.. slow, or is it the footage tha makes it appear that way?
  take a look a this one: http://www.youtube.com/watch?v=H6BkuTHcpIQ
  its from a friend, this was one "weak" stage, after that it got toothed pulleys and a few other tricks.

  
  
  You can use the pump mate, you've just got to make up fuel lines from the pump to the injectors as the firing order will be wrong, the pump will pump regardless of direction of rotation, so i've been told anyhow (the pump is driven from the opposite end of the camshaft via a belt you see!)
  
  Breadvan seems slow?? Try this video> http://www.youtube.com/watch?v=OJD3Zp56Hgk&NR=1 that's 4th gear from off boost and the speedo is in mph
• #9 by Ziptar on 17 May, 2008 05:40
• Have a look around on the vortex. I know I have seen a thread out there by E-Code Parts. He sells the 3cyl 14.L and 1.2L TDIs here in the states.
  
  Accroding to his posts they are a direct bolt in for the MKI Rabbit / Golfs and Polos.
• #10 by LregG on 17 May, 2008 05:50
• Cheers ziptar but i already have the 4 cyilnder 1.4d engine so it seems mad to swap to something else
• #11 by gigaz2 on 17 May, 2008 06:01
• ahh so it was the footage
  much better. how much boost?
  
  
  the VE pump can't work reversed, its designed to rotate on one sense or the other.
  
  I believe the difference is in the feed pump, cam, head and plunger.
  there should be other small differences, but believe me, it WONT pump when wound the other way.
• #12 by LregG on 17 May, 2008 06:13
• Quote from: "gigaz2"

  ahh so it was the footage
  much better. how much boost?
  
  
  the VE pump can't work reversed, its designed to rotate on one sense or the other.
  
  I believe the difference is in the feed pump, cam, head and plunger.
  there should be other small differences, but believe me, it WONT pump when wound the other way.

  
  
  OK, i'll have to make two pulleys running off of one another of the same size for the camshaft and injection pump to get it to spin the right way then, not a problem  
  
  The breadvan was running 15psi in that video
• #13 by gigaz2 on 17 May, 2008 07:15
• good idea, 1.6TD pump bracket could be modified to your engine? just a thought.
• #14 by LregG on 17 May, 2008 07:50
• Quote from: "gigaz2"

  good idea, 1.6TD pump bracket could be modified to your engine? just a thought.

  
  
  and run off of the crank in it's normal position?? No, it would be in the way of the turbo or oil filter take off