Compound pics

[935racer]

So have you dynoed it since the 12mm pump? did you get your clutch sorted out. I know that Dave @ PP has a 4puck and a 16Vpressure plate that holds alot of power, more then any 020 I have come across. That is if you are still running an 020. If not clutchnet has good stuff so does spec, as well as, dxd (southbends car division). How does the new combonaiton spool, with the big pump?

I am building Andy a special 3 strap pressure plate from a 16v sachs unit, as well as sending him a 4 puck disk. I see a riveted differential blowing to bits in andys future... :lol:

[DVST8R]

or a 5th gear, or an imput shaft or... What else did I break???  :lol:

[935racer]

or a 5th gear, or an imput shaft or... What else did I break???  :lol:

Shoot Brett you would like this I don't think I ever told you. After replacing one of your many blown o2o's last year I pulled one of them apart to see if I could salvage 5th for a buddy with a short ratio tranny in his gasser. The 5th gear was broken in 3 PIECES, none of the teeth were broken or stripped, the gear was just in 3 pieces, I was like  :shock:

So of course I put them in a bag and took them to my buddys later that night and said hey man I got something special for you, even better than a diesel 5th gear, a racing 3 piece gear  So him not knowing anything about trannys was all stoked and was already making plans as to when I could swap the gears for him until he opened the bag. Damn we were laughing.

[andy2]

No dyno since the 12mm was installed.After I get Dave's clutch installed and do some serious fine tuning I'll have to dyno it.Perhaps I'll dyno it before I start to test out the drivetrain too much :lol:.The way this 12mm pump puts out I can't see any issues making 200 WHP at the dyno next time.

[andy2]

As for spoolage well its alot better now the hy's working so well I may have to build a bypass like the Opel design.For the short peroid of time that the clutch did hold It was all I could do to keep the car on the road let alone read 2 boost gages and the pyro.I almost need a willing passenger to monitor whats going on when I'm flying down these bumpy back roads in forth :shock:.

[SMOKEYDUB]

I WILL BE THE CO PILOT! hey hopefully everything is going to work out. i think i only have a month left of building my car then im going to pull the hole  car apart and finish off some stuff and suspension and build up a new top end. also a well hidden nitrous system.

[stewardc]

Just wondering, guys. Does anyone do a heavy duty rebuild on the VW transmission? I mean, these cars have been raced for years...surely someone does a HD Race rebuild.

[andy2]

So the hy35 is too big for my compound setup(possibly even as a single turbo IMO??)  and I'm installing the hx30 again.The T3's wastegate flows good enough to the hy's turbine its just too big.Tonight I was removing the hy and intake manifold when I noticed that the #1 intake port was carboned up a good bit :cry:  so I ran the engine without the intake and I can hear and see very clearly at idle that the intake valve is leaking.So off comes the head for inspection.I will likely be installing head studs this time around.

[SMOKEYDUB]

no luck buddy.... i know how ya feel. well im happy with my headstuds i got rid of my cap srcews in a hurry when my car kept going through head gaskets and stripped the threads out of the block.

[andy2]

I don't think the headgasket was leaking with the capscrews in there but the studs will do a much better job thats for sure espically when I really crank this engine up.

I pulled the #1 intake and exhaust valves out tonight and could not see anything wrong with the valves,seats,springs or lifters.When I first had the engine running with my re done head on there in the spring it had the same noise coming out of the intake manifold and I figured it was somewhat normal but like now the engine ran great so I didn't worry about it.It has'nt got any worse but now with the intake manifold off I could really see how bad this problem was.So now it looks like there is a problem with the head where the normal looking cracks are found between the valves :roll:.I figure the crack is bad enough to the point where the pressure is leaking between the intake valve seat and the head??I'll hopefully get the head checked out soon as this is my daily driver .

[935racer]

So the hy35 is too big for my compound setup(possibly even as a single turbo IMO??)  and I'm installing the hx30 again.The T3's wastegate flows good enough to the hy's turbine its just too big.Tonight I was removing the hy and intake manifold when I noticed that the #1 intake port was carboned up a good bit :cry:  so I ran the engine without the intake and I can hear and see very clearly at idle that the intake valve is leaking.So off comes the head for inspection.I will likely be installing head studs this time around.

Something isn't right if your hy isn't spooling. Apparently the hy35 turbine is around .48 AR, I have run .48 ar turbines on 1.6's and 1.9's as single turbos with no issues, I get full boost (around 35 psi) at about 3-3500 rpm, this is of course with modfied fuel pumps and stuff, not stock. On my 1.6td I am putting together for my daily driver I am using a .48 with my new tubular manifolds, it should spool great.

[QuickTD]

Rememeber the A/R can't really be used as a reference from one manufacturer to another. I would expect the HY would be comparable to a T4 .48 A/R, not a T3 .48.

[andy2]

I'm thinking the hy is more like a .54-.60 AR if the .48 spools good.

Correction:more compareable to a .54-.60AR :wink:

[andy2]

The hy didn't spool well enough for Hilfolkr's TDI either this only supports my theroy about it being to big.A Tubular manifold would help it spool quicker but I think that the max boost may only go up 1-3 psi when compared to the stock manifold.

[andy2]

Lots of updates :lol:,Last time I replied on this thread I had the cracked head which I had repaired.At the time when the turbo (hy35) was off I decided to put the hx30 back on as the hy was not working for me.So I had it all back together and running with some crazy hybrid injector boddies,They consisted old GM 6.2 injector (bottom W/corse thread) unlike the later 6.2 injector,Then I used the 1.6 injector top on the 6.2 bottom as the threads were the same.I assembled them with the Merc nozzles and they work alot better than the 2 stage 1.9 setup I had in there before.Why? Where the cyl head and heatshield sit there was an issue with the sealing as the heat and pressure had kind of got the better of the head this resulted in compression leaking by the heatshield therefor seizing up the nozzle!No more issues now as I used a copper washer to seal the inj to head :twisted:,Crazy :twisted:.

So I had the t3/hx3o on there and can't get that combo to work right either :cry:.I was testing out drive pressures vs boost when my coolant temp goes up.I pulled over to see coolant pounding out the overflow,Now I have to pull the head again to see whats going on either headgasket/stud issue or cracked head??

While I have this apart I will swap the T3 turbo for the k24/k14 turbo which seemed to work well before with the hx30 :roll:.So I'm busy again.