I'm building an AHU with a LR 300TDi pump, what are they like in comparison?
Also how do you plan on attaching the turbo? i got my GT20 off an A4 2.5TDi over here for £60, but they're not a straight fit on any manifolds as far as i know. As such i'll be making an adaptor from a trapezoid 4 bolt manifold to the rectangular 4 bolt Garrett flange. If you want a pair of flanges, or the CAD drawings for them, let me know. will be getting them laser cut in work soon. Also curious as to how you intend to control it. I've a method in mind but have no idea how it'll perform in day to day driving to be honest
I am actually leaning more towards a non vgt turbo at this point and getting a traditional wastegated unit. Not entirely sure yet though. As far as manifold I plan to run a cast turbo 8v manifold from ebay.
http://www.ebay.com/itm/VW-8V-CAST-IRON-TURBO-EXHAUST-MANIFOLD-GOLF-JETTA-PASSAT-BEETLE-CABRIO-MK3-T3-/280939833590?pt=Motors_Car_Truck_Parts_Accessories&hash=item416951a8f6&vxp=mtr#ht_1651wt_1037And while I do trust genuine bosch parts. I'd rather take it easy with expensive pumps. Especially on interference timing belt engines. That part always makes me nervous.
If the plunger seizes it won't do anything to the timing belt. The plunger will snap before the engine jumps time. All that happens is the engine stops running. It doesn't cause damage outside the pump.
I guess that makes sense because why would the plunger stop the rotating assembly of the pump? I dont know, I know timing belts are pretty tough and they are nice because they are quiet, but having everything timed with gears just lets me sleep good at night haha.
So to those people that have seized a pump what happens? The engine just loses capability to maintain rpms and eventually stalls out? Im picturing much more catastrophic things in my head
I guess that makes sense because why would the plunger stop the rotating assembly of the pump? I dont know, I know timing belts are pretty tough and they are nice because they are quiet, but having everything timed with gears just lets me sleep good at night haha.
So to those people that have seized a pump what happens? The engine just loses capability to maintain rpms and eventually stalls out? Im picturing much more catastrophic things in my head
the engine just stops like you have turned of the key as it can not pump any fuel to the injectors , what power you looking for out of your build
I'd like to get the max I can without worrying about the stock bottom end. I dont want to throw in the added cost of rosten rods or a girdle at this time. So what does that put me at 230hp maybe 250hp? I am definitely considering getting the pistons machined down so that I can safely throw a little more boost at it. I also plan to do water/methanol injection so I will have high peak cylinder pressures. Hopefully a lower cr will help with that as well. At some point depending on what people who have done it think, I will want a cam and possibly valve train upgrades.
IMO u should do the rods to make 230-250hp on a tdi it puts a lot of stress on those parts because all the power is in the lower rpms
Well maybe I just need to aim at a lower power level. I just cant justify all that money yet. Because if I do rods I might as well do a girdle and some other stuff too. And I just bought a prefabbed garage and am working on buying my first home. I have driven an alh that only had a good exhaust, small nozzles (slightly bigger than stock), and a mild tune and I was happy with the power. There is no reason my big pump, big sticks, exhaust, big turbo cant feel like a speed demon compared to that and by using a bigger turbo it will have a little more boost lag and cause a lot less stress on the bottom end. At least that is the plan.