Daydreaming a 1.9 TDI for land speed racing - help me dream, please.

[Jetmugg]

That's a smokin' deal - I'll see if I can help find a deserving and willing buyer.

Steve.

[Karel87]

i have also thought about making 2042cc idi engine based on gasser block. My plan was to use pistons from Euro Ford 1.8TD engine. Compared to AAZ ones, those are very similar, only  3mm larger in diameter.
AAZ piston
https://onlineshop.ms-motor-service.com/msi/MSICD?lang=E&page=showKODetail&ksnr=91429600
Ford Escort 1,8TD piston
https://onlineshop.ms-motor-service.com/msi/MSICD?lang=E&page=showKODetail&ksnr=94664602
When using AAZ rods, those pistons would be direct fit into 236mm height gasser block. Piston protursion and compression ratio would be about the same as AAZ.
Eventually I did still use 1Y block, because block deck seemed alot weaker. Gasser blocks use 11mm head bolts. When compared to diesel block, head bolt holes were also a lot shallower and there was less metal around them.
Early 1,6D blocks with 11mm head bolts had tendency for cracking. I think, with increaced displacement and higher power levels, this problem would get horribly worse.

[CRSMP5]

i think 11mm head studs all thats needed.. but my history of 11mm 1.6 is easy.. if its never been real hot, no prob.. but if you cooked it hot enough to damage the head gasket it had 50% chance to crack.. and if head warps.. it will crack on head reinstall...

the problem... unlike 80-88ish.. no history now... those ones i know of with good history.. no issues.. my 11mm block ive used since 90... the one in storage.. in use since mid 90s with over bore and all..

the thing with the 9a block.. short rods/1.6 block height.. forged pistons.. they make them... but not real common... 2.0 16v lost value due to 1.8t.. finding a passat or 16v with broken timming belt.. head scrap.. block good... poof.. bottom end cheap..

now if you can find a set of pistons for the aba taller like aaz block.. sweet... we would have block sources for ever...

but then which will rev better... the short one...

[Jetmugg]

Unfortunately, 2042 cc's is just a bit too big for this class.

I see that JE pistons makes forged slugs for the 9a application.  About $600 per set.  Not outlandish, but not exactly on a budget, either.

[CRSMP5]

but i think the stock 9a pistons/rods will work... not like your dumping propain/nos on it..

if you were not so far away... we would slip some intermediate shaft berings in mine... loan it to ya to bolt your stuff to.. hit dyno on the "stock non rebuilt bottom end" and see what it does... came out of running car that did not have oil, temp or burning issues... but i went to swap im shafts and found the im bearings falling apart like they do..

then if you see a wow..  and i can still do more.. then tear down, knife edge, balance so on...

but honestly.. so simple to test.. then you can work on piston to designs and such..

why i wanna get it just running before any real $ spent..

[Jetmugg]

I found a local guy with an almost complete 9a bottom end available cheap. However, he doesn't have the crankshaft. Will an ABA crank work?

[CRSMP5]

honestly, not positive if they are due to block height differance... id think they are... but need to double check..

[RabbitJockey]

as long as the aba has the same stroke it will work, block height differences would be made up for by rod length or wrist pin location in the piston

[Jetmugg]

This type of conversion looks like a possibility, and I'm going to get some parts from a local guy to start mocking it up.

Back to TDI content - what do you guys think about the possibility of an MTDI based on an ALH engine, ported head, high-rev valvetrain, big turbo, and a PD130/150 style intake?

Steve.

[bbob203]

I think its a great option. You may even be able to use some sort of pd bottom end w/ the alh head on it for better strength. Don't ask about mtdi on tdiclub though. The rover pump bolts right on to the alh. look at vanbcguy's thread.

[theman53]

I think to have the TDI torque down low you will need a trans with a gear so tall it would be impossible. If you are worried about the 1.5 being able to pull at the high rpm then I would be worried about the TDI more. My TDI actually pulls better at 2,000 rpm than at 4,500 rpm. So you would need a trans that is almost 2x as tall to get it where it pulls best...these are generic figures to illustrate as you would not need a trans quite that tall but I think you will want the idi diesel rev range is the point.
if you have a aaz and it hits peak torque at 4,000 rpm or so it would be more suited for what you want. Also why I think the possible idea of the 9a 2.0 is a great idea if it works

[RabbitJockey]

i think tdi with proper porting, manifolds, and turbos can make high rpm hp.  much like a 1.6td you can't compare stock performance with tiny turbo, tiny valves, and crappy stock cast ports to a modified engine.  higher rpm power has definitely been done, look to scandinavia, and thats the best way to make power, just like there is no replacement for displacement there is no replacement for higher revs, ur moving way more air so you're going to make more power to a point.

[bbob203]

i think tdi with proper porting, manifolds, and turbos can make high rpm hp.  much like a 1.6td you can't compare stock performance with tiny turbo, tiny valves, and crappy stock cast ports to a modified engine.  higher rpm power has definitely been done, look to scandinavia, and thats the best way to make power, just like there is no replacement for displacement there is no replacement for higher revs, ur moving way more air so you're going to make more power to a point.

Thats what happens when you have winter for 9months a year.

[Jetmugg]

I think to have the TDI torque down low you will need a trans with a gear so tall it would be impossible. If you are worried about the 1.5 being able to pull at the high rpm then I would be worried about the TDI more. My TDI actually pulls better at 2,000 rpm than at 4,500 rpm. So you would need a trans that is almost 2x as tall to get it where it pulls best...these are generic figures to illustrate as you would not need a trans quite that tall but I think you will want the idi diesel rev range is the point.
if you have a aaz and it hits peak torque at 4,000 rpm or so it would be more suited for what you want. Also why I think the possible idea of the 9a 2.0 is a great idea if it works

...or, I could just run on 43" tall tires.

[CRSMP5]

ive had my square box has past your 1.5 speed goal... stock landy pump/wgov mod, stock turbo, 18~21psi fmic, 2.5" straight pipe... cam, turbo and pump work would make it more silly then i feel it already is.

mine will also pull till it no longer breaths.. stock 98 tdi tranny, 3rd gear, 195-50 15 kuhmo's will pull 78mph in 3rd... math says past 6k on rpm..

if it were not the wind picking up and both doors were open.. i bet it would have done more.. and i rolled (between 1-2 miles) into that speed and was not foot to floor yet.. in 5th from 70... its was a nice day.. nice road.. nice tunes.. gps on dash... and a why not

a real turbo.. a not box of wind.. i see no reason it would not be close... why i really think a bottom end change on your current stuff will do it.. or be close enough to say ha.. i did it for cheap.. now need lots of $ for that last mph..

be carefull on tdi head porting.. lots of rumors on how to ruin it.. but yes a tdi-m in stock form is impressive as its strong imo vs a same tdi e set up... aka swap pumps and gain more then seat of pants hp..

i have never gov modded any of my 1.6.. or even intercooled them.. but my tdi-m imo feels better then most stock vr6... will keep up with a stock 2.0 16v jetta... it really is a impressive wow you mean its a diesel to others who have went for a ride..