That's correct.
New 440 build issues
- Thread starter chermik1999
- Start date
I told you it was back when you started this post. I never trust any timing set no matter who makes it and what the dots and numbers say. I degree every one.
Very true but it likely would have been within 1 or 2 degrees if it had been installed correctly.
Very true. But who would have thought being out 43° and still run. Here I am like a fool chasing timing, jetting carbs, fuel pumps and filters, upping stall convertor etc.
I should have ran a camera first and saved myself all the headaches and time and $$.
Ohh well. I'm just glad there wasn't more problems like there could have been.
Always degree cams. Or at least if straight up, find TDC first....lol
I should have ran a camera first and saved myself all the headaches and time and $$.
Ohh well. I'm just glad there wasn't more problems like there could have been.
Always degree cams. Or at least if straight up, find TDC first....lol
padam
Well-Known Member
Yeah, troubleshooting is the thing to do.
Well when you trust a name company to do the job, you don't think to check this. But lesson learned.
I'm actually getting excited to swap for the lunati now. With the upgraded stall and combo changes, this should rock as to how I expected.
I'm actually getting excited to swap for the lunati now. With the upgraded stall and combo changes, this should rock as to how I expected.
Bee1971
Well-Known Member
And build 170 PSI Compression
Yes you're right. It was out 3 teeth. Each tooth would be 14.5°. Just enough to hit the valves. Hers how it was installed. They lined up the cam dot with 0 on crank. So retarded R4.
Sorry..wrong pic. This was the one.
New cam is in. And degreed at 106 as per card ICL. So buttoning It up and starting hopefully today for breakin.
The degree wheel at true TDC shows 43°.
I'm thinking there was and inexperienced builder. He installed what he thought was correct. Noticed valves were hitting pistons and re traced back to re align the cam. Otherwise of was running surely those valves could have been bent.
As the multiple keyway gear was confusing, he finally lined it up with the 0 not the dot. Still retarded but not enough to bent valves. Just enough to make it a dog though.
I'm not experienced enough either, but I did this once in a SB build but keyway only 3 marks. 0, advanced and retarded. So I lined up woth the triangle not paying attention. Bent all 8 exhaust valves..lol.
I'm thinking there was and inexperienced builder. He installed what he thought was correct. Noticed valves were hitting pistons and re traced back to re align the cam. Otherwise of was running surely those valves could have been bent.
As the multiple keyway gear was confusing, he finally lined it up with the 0 not the dot. Still retarded but not enough to bent valves. Just enough to make it a dog though.
I'm not experienced enough either, but I did this once in a SB build but keyway only 3 marks. 0, advanced and retarded. So I lined up woth the triangle not paying attention. Bent all 8 exhaust valves..lol.
Also when i did the comp test, I was checking for bent valves, so removed the rockers. No leaks but good comp. So carried on.
Sorry Geoff...43 at the cam gear. Like 8 on the crank. Was reading the degree wheel as per the pic.
So appears without degreeing the cam which obviously was out of spec, the retarding added to my woes. Possibly with a 4500 stall and 4.10's, maybe would have been fine. Just not for average street.
padam
Well-Known Member
Whatever you do, sounds like you might want to have someone check your work.
Hum..think? Am I doing doing something wrong?
padam
Well-Known Member
Maybe not but your posts are very confusing. Maybe it’s just your typing. Mine gets the best of me.
Haha...sorry. my explanation is most likely not professional or technical.
Bottom line is the purple shaft was out 6-8° plus wasn't degreed. So it was most likely out as well. Combine that all together made it an all out track motor. Not for me.
Had I kept it, I probably could have degreed it better to use it. But why bother...too much duration for my use and with advertised 108° ICL for no vacuum.
I think the piston/valve damage was from first assembly and then they figured it out and adjusted the cam a bit.
Only thing is after that, I would have degreed it for sure. They didn't so that's the issue. I didn't either so won't know..sending it back to them. Starting fresh with piston marks...lol
Bottom line is the purple shaft was out 6-8° plus wasn't degreed. So it was most likely out as well. Combine that all together made it an all out track motor. Not for me.
Had I kept it, I probably could have degreed it better to use it. But why bother...too much duration for my use and with advertised 108° ICL for no vacuum.
I think the piston/valve damage was from first assembly and then they figured it out and adjusted the cam a bit.
Only thing is after that, I would have degreed it for sure. They didn't so that's the issue. I didn't either so won't know..sending it back to them. Starting fresh with piston marks...lol
Curiousyellow71
Well-Known Member
Not sure where you are getting 6-8 degrees? I don't see that being possible assembled like this picture. Think of the cam relative to the crank. In terms of ret/adv. If cam is advanced it is advanced ahead of the crank.
It appears they installed it advanced 40+ degrees, not retarded.
They does explain why your compression tests read high and had no vacuum. I would also guess that it kissed the valves at that point. I doubt they changed It. They just didn't understand the lower gear markings...and that is sad.
The pistons they installed likely were oem replacement to speedpros for 67 and 70 440. They have a 1.991 compression height and are nearly .090 down the deck. It typically would be less then 9:1....unless heads or deck has material moved w a open chambered head.
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Holy crap batman! Ur pretty dead on.
Yes as im not seasoned in this, yes advanced. Around 43°. Man you know your s***t!
As for the rest, wow! Yes are speedpro forged but block is a 73 I believe with steel crank. But could be 70. Have to look harder.
As for the heads, yes we're decked and .020 cometics.
So your saying with a proper cam, I'll still have no vacuum? Cam going in is actually a lunati 10230703, not the 303 I thought.
Just measuring push rods now as ones I have are too long...
Yes as im not seasoned in this, yes advanced. Around 43°. Man you know your s***t!
As for the rest, wow! Yes are speedpro forged but block is a 73 I believe with steel crank. But could be 70. Have to look harder.
As for the heads, yes we're decked and .020 cometics.
So your saying with a proper cam, I'll still have no vacuum? Cam going in is actually a lunati 10230703, not the 303 I thought.
Just measuring push rods now as ones I have are too long...
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