Ef4doorwagon

Im did a y8 b2 mini me swap. My dizzy is advanced as far as it can go, and my timing is way off. My car runs like poop.cant accelerate fast at all, believe i have to advance it more, so my friend gave me an adjustable cam gear,
So how do i make it work so my timing is correct?
Im having trouble finding helpful videos or linka on google and youtube, and i really want to get this timing issue fixed.

doctorake

You need to fix your stock set up and read and research. If you have no clue how timing works you could end up with a big problem.

B_Swapped93

He 100% doesn't know what he's doing probably threw that swap together.

TomCat39

The break down of the adjustable cam gear is this. When you change the head to a foreign block, or foreign head on your stock block you can change the height that the cam is from the block which can throw the timing off by half a tooth typically. A few millimeters distance can have quite an effect.

To be able to setup your cam gear you have to be able to know what Top Dead Center is on the cam by the lobes, not the gear. Then you can set your cam gear to the proper position and lock it in with the adjusting screws.

If you only know how to set mechanical timing via the markings on the cam gear then you won't be able to identify the proper positioning via the cam lobes.

Hopes this helps direct you in the proper direction. Happy learning and good luck. Appreciate the hands on approach.

Oh am moving this to misc tech being it's not a 92-00 specific question even if your mini me is.

NotARaCist

iTrader: (1)

Are you using the Y8 cam gear, or the B2 cam gear?

Ef4doorwagon

Thx tom thats some helpful advice, the other 2 posts didnt help at all. K so well idk much about determining tdc with the lobes, my mechanical timing is right( oil pump arrow aligned with the mark on the crank, whilecam gear UP mark is ontop.) But yeah running obd1 p28 ecu on a y8 so the dizzy timing will be off, so if i understand correctly, align everything to tdc, take stock camoff then put adj. On, loosen the 5 bolts, and turn the crank counter clock to advance it? Or no.

Ef4doorwagon

And my setup: b2 block, y8 head, b7 dizzy( with z6 guts), and a b7/z6 cam gear, p28 obd1 ecu. If i set my timing light to 0 degrees the marks are at tdc, if i set to 14 or 16, the marks get closer to the power steering pump( if that makes sense) and my dizzy is advanced as far as possible.

NotARaCist

iTrader: (1)

You're using the wrong gear, which is putting your timing out by 4.75*. Either use your adjustable cam gear to get it straight, or put the B2 cam gear on there.

TomCat39

If you were after the adjustable cam gear being on, not exactly.

After you set TDC of the cam with the stock B2 cam gear, you would note the exact position of the #1 lobe and the cam gear key. When you put the adjustable cam gear on with the cam in the exact position it was, you would then adjust the teeth to mesh with the timing belt teeth. That's essentially what the adjustable cam gear does is lets you mesh the teeth to a non stock setup. Swapping heads to different blocks is basically a non stock setup with foreign specs. It's also why a good tune is often necessary being all the specs have changed. But really, what I believe experienced swappers do with the adjustable cam gear is get it on with the timing belt close to TDC then adjust the cam the degrees to true it up to TDC while the block is TDC. Then cinch down the gear adjusting screws, to do this you need to know what you are looking at when looking at the lobes. So you don't spin the crank at all once it is TDC until you are all done setting everything else up.

I remember reading once what the position of the #1 lobe was supposed to be at TDC but for the life of me I don't remember off the top of my head. But since I have an idea of what to look for, I'm pretty sure a couple of solid Google searches would point me into the lobe position for TDC.

Ef4doorwagon

But the z6 b7 and b2 gears are the same... same gear teeth n size.

Ef4doorwagon

I see, good info. I read somewhere that i have to take my dizzy cap off and when the rotor points to the 1st cylinder, then that cylinder is at tdc, is that true?
Also when this shop taught me how to adjust valves, the guy told me to rotate in 90 degree turns and to watch the lobes, but i dont remember if he said " When the lobes are faced down, then you can adjust"

gsrturbo-ek

you need a y8 dizzy....the y8 has the tabs in diffrent places

Ef4doorwagon

Mounting tabs? The b7 bolts up fine just that it wouldnt fire up my car, it had spark tho. Then i bolted up my z6 one, only one bolt sort of went in, And the car fired up right away, so i swapped the internals of the z6 into the b7, tho my b7 probably had a weak coil... could have just swapped it.

Ef4doorwagon

Ohhh wait i think i understand how to use it....
On the cam it says "each mark =2° crank. Theres 40 marks, 20 for retard 20 advance. Halfway i. At 0.( in the middle un adjusted)
So when my timing light is set at 0 °, and i light the crank pulley, the tdc mark shows and its lined with the cover mark. So i guess ifi , put the light at advance 16, at the crank, then i wouls need to move the camshft 8° advance... thats the best i can think of, if any one is reading this, please letme know if im on the right track

TomCat39

Timing light is for ignition timing. Setting up an adjustable cam gear is mechanical timing. Related but not the same thing. And one can not be used for the other.

But since it's not just about an adjustable cam gear you are actually asking about, read this thread. I think the B2 should be about the same situation as the B7/8 block.

Ef4doorwagon

Um the link you posted didnt really help? Maybe you can elaborate your point.
My problem is: my timing is perfect, all marks align at tdc, but my car runs bad, no balla to pull in lowspeeds but is fine in higher speeds. Thats because it needs to be advanced more, problem is my dizzy wont let me advance anymore. I believe cuz the b2 deck height is 211 and that messes with the timing, compared to the b8\b7 which has 207. Could also be that im not using the y8 dizzy... im using a z6 gear which is exactly the same as b2( ive put both on and had the same problem, just , to confirm that "b2 cam gear will fix the timing" it does Not.
I believe i have to advance like 8 or 9° at the crank, to be in correct time, which is i believe 4 or 4.75° on the cam side. So since my dizzy cant advance anymore, i received an adjustable cam, hoping that by messing with it will allow me to advance my setup.

TomCat39

You are really mixing and matching parts here.

The D15B2 looks to be a OBD0 fuel system in the USDM. If your fuel rail and injectors are from the B2, that is probably why the B7 stock dizzy didn't work. Then you frankensteined the dizzy by throwing the Z6 internals in, another OBD1 fuel system dizzy. Why it worked, not sure. I do not know if the B2 dizzy will bolt up to the Y8 head. So it sounds like you need to get the injectors and the fuel rail setup from a B7 or B8 and swap those in, then return the B7 internals to the B7 dizzy casing and use the stock B7 dizzy.

Then you can do the mechanical and ignition timing and it should work properly like the write up I posted. The only part of the B2 being used is the block.

For the mechanical timing, keep the bolt of cam gear bolt off, slide the Y8 gear on with the key but no timing belt. Rotate the Y8 cam gear so that it is in the TDC position. Mark exactly where the key is with felt pen on the side of the head. Take the Y8 gear off. Put the adjustable cam gear on but with the adjustment screws not fully tight. Get your crank into TDC and then put the cam key to your mark and loosen the cam gear adjuster screws. Work the timing belt on so that the cam gear fits while the cam key never moves from your marked position. Once the timing belt is on properly with the crank in TDC and the cam gear key in your marked position, tighten the cam gear adjusting screws to lock it into place. Tighten your cam gear bolt to secure the gear. Now you can set timing belt tension and your mechanical timing is done. The cam gear bolt blocks your view of the cam key so will need to be off or loose enough you can monitor the key position compared to your mark.

With that out of the way you can then work out your dizzy and fuel rail problems so you can then set your ignition timing to the 16 degrees it's supposed to be.

Hopefully this makes sense. It's the easiest way I can think of to set the adjustable cam gear.

Someone correct me if that method is incorrect. I believe that should set the cam to be TDC even though the teeth of the timing belt will be about a half tooth off in theory.

With what you said about the deck height differences between the B2 block and the B7 block..... Makes me wonder. Maybe it's 3/4 of a tooth off...

Ef4doorwagon

I converted my d15b2 to mpfi. Using obd0 si injectors nd resistor box, not the dpfi injectors.

Idk if i can change the internals, it was a pain cuz i kept messing with the 2 teeth on the dizzy that attach to the cam.
My friend said the y8 headon the b2 block is slightly more complicated than the z6 head( with a z6 i can use obd1 dizzy and ecu and a y8 gear to Perfect timing) but since im using an obd2 head, with obd1 dizzy and ecu, it complicates things to where i HAVE to use an adjustable( plus itll help when i get it tuned)
Unfortunately i moved my timing belt off and the cam turned 90 degrees and now i have to take the rocker arms off to put the cam at tdc safely, and re align the crank to tdc.

What i hope to accomplish is, move my dizzy to the middle, once everything is at tdc, put the belt on, then advance my adjustable 4°, that advances 8 on the crank,
( or would it be Easier if i advance the gear then put the belt on and tighten everything?? So i dont have to move the crank?)
then fire up my car, and then use a timing light, set it at 16, hopefullu the mark will be alot closer than it was when i had my stock gear, and then i can adjust my dizzy to the marks. Pretty much hoping itll fix timing problem with my problematic setup.

Ef4doorwagon

In case anyone was following this. It worked. When i installed my adjustable cam gear, i advanced the gear 4°. ( before i even put the belt on) tightened the bolts, and put the timing belt on, then when i went to time the ignition with the light, i was able to move the dizzy and align the marks perfectly. It was alot easier than i thought.