Author Topic: Custom cams, Volunteers needed  (Read 15510 times)

Reply #15November 13, 2005, 10:24:51 am

andy2

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« Reply #15 on: November 13, 2005, 10:24:51 am »
Yep the 1.6 camplate has 2.2mm lift and the 1.9 camplate has 3.2 and as bruce mentioned you'd only technically ever need a dial with 1.5 mm lift for setting VW pump timing.Just remember that you don't have the cold advance handle pulled out while setting timing or it would add another .4 mm onto your reading.

Reply #16November 13, 2005, 10:36:48 am

935racer

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« Reply #16 on: November 13, 2005, 10:36:48 am »
Do you know how to hand time pumps deo? Thats was the only way we timed pumps at Mercedes Benz. I have hand timed a few vw pumps and you can usually get them within spec fairly easily if you have a good ear. Anyways back to cams guys! Hey andy2 how about a cam to get those 2 turbos movin a bit quicker?
P.s. all of us still want to see pictures of that setup.

Reply #17November 13, 2005, 04:25:01 pm

therabbittree

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« Reply #17 on: November 13, 2005, 04:25:01 pm »
well I've hand timed this one previously just takes a little testing and tuning ..but I am kinda irked about it, I wanted to set it up "correctly " this time etc. I checked if  the plunger of the dial indicator was hanging uop by pressing on it as i turned the pump ..it still was pressed against the pump plunger and had no movement...I had been able to get it timed last time by jumping a few teeth on the gear and the t belt...any how back to cams...whats the most extrem one you have now..will they work better thena g grind converted to diesel?...i haven't heard about andy2 and the twins..does some one have aset of teins on a 1.6 TD or tdi ..i would liek to see it i did some years ago and want to do a set now..kkk24 and hy35 holset with 9cm exhaust housing...
thanks
Deo

Reply #18November 13, 2005, 05:03:51 pm

andy2

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« Reply #18 on: November 13, 2005, 05:03:51 pm »
My twin setup is as follows;Flipped manifold, k24/k14 hybrid with enlarged wastegate bypass.Then I used a HX30w form a 4bt cummins to sit ontop roughly where the stock turbo sits only now intake and exhaust are on opposite sides.I'm running 32psi boost with 2-3 psi IC+plumbing leak and 40 psi drive pressure.Spools pretty quick and works great.The hx30's wastegate will probably never open as it seems to be sized good

Reply #19November 13, 2005, 05:18:24 pm

therabbittree

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« Reply #19 on: November 13, 2005, 05:18:24 pm »
cool sounds like how i want to do mine...but slightly different turbo... post some pics.. everybodies seem my old frankin turbos setup ha..next one will be clean and neat..sounds like its working good fro you..what engine is yours..if 1.6L u using the 1.9L mls headgasket?..using the small turbos wase gate and not the big one or what..my dodge has home made twins on it hy35 and a hx55... does your setup it fit under the hood?..did you get rid of the rain gutter?....and to get back to cams ..are you using  one of the new cams?...
Thanks
Deo
\x/ hillfolk!

Reply #20November 13, 2005, 06:15:58 pm

935racer

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« Reply #20 on: November 13, 2005, 06:15:58 pm »
Well the biggest cam is the stage 3 cam, wich has a lot more lift than the stock cam. I have never tried a g grind cam on a diesel so I don't know. Is your head a solid lifter or hydro?

Reply #21November 13, 2005, 07:50:12 pm

andy2

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« Reply #21 on: November 13, 2005, 07:50:12 pm »
Yeah It all fits under the hood and has adequate firewall clearance,Not one dent at all 8) .The k24's wastegate is the only one being used.Its a 1.9aaz BTW.Also back to the cam's,I will definitely get one in the near future.I really need to get a camera :)

Reply #22November 14, 2005, 03:00:25 am

Mark(The Miser)UK

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« Reply #22 on: November 14, 2005, 03:00:25 am »
Sorry helped wron person duhhhh
Mark-The-Miser-UK

"There's nothing like driving past a bonfire and then realising; its my car on fire!"

I'm not here to help... I'm here to Pro-Volke"

Be like meeee: drive a Quantum TD
 ...The best work-horse after the cart...

Reply #23November 14, 2005, 03:42:39 am

Mark(The Miser)UK

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« Reply #23 on: November 14, 2005, 03:42:39 am »
Quote from: "therabbittree"
Well I have been stumbling with this for a while,.. here's the deal.
When the engine is at tdc, and the pump is locked with the pin, lined up with the static notch and mark on the pump bracket.....I have the dial indicator preloaded about 3mm etc.. I turn the engine backwards and nothing shows on the dial indicator. I even put pressure on the dial indicator plunger, and it is bottomed out and not using the preload.... any how, if I keep turning the engine backwards, I can eventually get the dial indicator to climb NOT DROP...so I think that means the pump is built wrong ...it should be at max lift on the plunger with the engine at tdc..it seems to be at a flat spot between bumps on the plunger with the engine at tdc...hence when I turn the engine backwards, I get no moment until  the indicator climbs up the plunger again ..but way back on the reverse engine rotation.  The problem is how can it be assembled wrong?.. The plunger can't be installed out of time as it has a locating pin right?.. The key way is in the stock location and with the pully locked, the key way is facing toward the cyl head..weird
I am trying to figure it out...  I used to have to jump a tooth on the pump gear to time it before, when I used it with my last 1.6TD. That worked "ok" but it never was right ...weird..  I had told Piers and they told me to spill port time it or use my piazzo setup.. That kinda was messed up too.. figure they would have me send it back and fix it for me .... no. I have not taken the pump apart to check it out as it was sealed by them. But, I think thats the only way to fix this problem correctly.
Any ideas..???????????
Thanks
Deo
\x/ Hillfolk!
Sorry to maintain this 'off thread' thread but you need help...Your problem looks like you have either an incorrect sprocket on the pump(unlikely) OR as I'm scratching it out on the table ... Your sprocket is on back to front. reverse sprocket and the woodruff will reallign itself towards the head of the pump... If you feel this has saved you $1000's then send me a set of heatshields ($5 each here in limey land) and $ nothing out your way  :shock:
Mark-The-Miser-UK

"There's nothing like driving past a bonfire and then realising; its my car on fire!"

I'm not here to help... I'm here to Pro-Volke"

Be like meeee: drive a Quantum TD
 ...The best work-horse after the cart...

Reply #24November 16, 2005, 04:53:16 am

therabbittree

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« Reply #24 on: November 16, 2005, 04:53:16 am »
I don't quite get what you mean.. the sprocket can only go on one way its tapered and keyed..so ..give me apm or i'll start a new thread on this problem..
thanks
deo
\x/ hillfolk!

Reply #25November 16, 2005, 04:56:51 am

therabbittree

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« Reply #25 on: November 16, 2005, 04:56:51 am »
back to the cam Question ...i'm running a hydraulic mf engine right now...so if that helps you..also simon cooper had been used a g grind solid cam in a hydraulic diesel head previously and it needs about 2.5mm of valve relief to run....the solid gasser and hydraulic diesel cams have the same base circle....
thanks
Deo
\x/ hillfolk!

Reply #26November 16, 2005, 08:47:05 am

VWRacer

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« Reply #26 on: November 16, 2005, 08:47:05 am »
Deo, just to be clear, is that 2.5mm reliefs cut into the tops of the pistons?
Stan
C-Sports Racer

Reply #27November 16, 2005, 10:20:12 am

935racer

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« Reply #27 on: November 16, 2005, 10:20:12 am »
These cams need no modfication, they are a bolt on. I had looked into using a gas cam before but the sprocket is much smaller on the gas cams and I didn't want to go through the trouble of modifying it differently. The first couple cams are ready to go.

Reply #28November 16, 2005, 11:51:50 am

fspGTD

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« Reply #28 on: November 16, 2005, 11:51:50 am »
Hey Dave, just wanted to let you know I'd be all over helping with your cam research, but my racing class doesn't allow cam changes (luckily for my budget!  :lol:)
Jake Russell
'81 VW Rabbit GTD Autocrosser 1.6lTD, SCCA FSP Class
Dieselicious Turbocharger Upgrade/Rebuild Kits

Reply #29November 16, 2005, 01:07:59 pm

935racer

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« Reply #29 on: November 16, 2005, 01:07:59 pm »
Hey who says you have to race with them :D  But you probaby wouldnt want to go back to stock after trying these cams:twisted: I still need to send you those injectors I will try and do that this week.  If anyone would like a custom cam just email us.