biscuit

Hey all. I'm having some trouble setting timing. I've checked the base and all of the marks are lining up perfectly. When i use the timing light i can't get the marks to line up and the distributor is turned all the way. The idle is about 800 rpm.

Would a basemap retard timing at idle? Should i put in my stock injectors and run the stock ecu to set timing? I still have to get my IAT sensor in, would that throw off timing? I'm trying to get everything set for getting it tuned and this is the only thing that is giving me trouble.

The engine is a D16y8. I'm running off a p28 ecu with a crome basemap and 450cc injectors.

lilpooh21186

what kind of timing light are you using if its the digital set the number for the deg of timing you need then aim for the the TDC mark.

Chris Harris

Is this a Y8 with 450cc Dennis?

biscuit

I plan on having you do my tune Chris. Is this something that I need to have resolved before tuning? Or could you fix this issue during the process?

leed

I never understood the y8 timing dilemma. If you're unable to physically sync timing to the map, just offset the map and make a note of it.

Tom-Guy

Set idle timing to 12 degrees (that's where your timing mark is on the D16Y, not 16 degrees like earlier D-series) and accept the fact that with OBD1 your distributor will have to be cranked all the way one direction because D16Y are "made funny."

There is a small chance that, if the engine has been milled/decked, that you won't be able to quite get it into timing. You need a cam gear at that point. However, if this happens, it is MUCH more likely that you have a lower timing cover and a crank pulley that aren't off of the same exact engine. 20-40% of D-series I see have the wrong pulley, and it throws a timing light off.

Smith-02

make up your mind is it 20 or 40?
for ***** sake.

leed

If you're using a dial-back timing light on the TDC marks (JD's favorite), then you dont need to worry about what crank pulley is on there. Â

Chris Harris

I was asking the guy above you who posted.

yes, i would prefer that you make sure the motor is timed before bringing it in...just to make sure there are no mechanical issues (timing belt, distributor issues, etc).

My advice, take a Crome map, set ALL of the values in the low cam timing map to 22 degrees....every value, get the car warmed up all the way. Put the distributor in the middle, and use a timing light and synch to the 12 degree mark on the crank pulley. If you can get it close to that mark....yur good. Oh, and listen to JD, whenever I have D-series questions I call him 1st