A/f gauge shows lean

[godfather]

Rings are good, no blow-by and compression is way the heck up there. It's going to be a month or so before I can tear out the cam. I have another problem, put in a new high volume oil pump (keep in mind that all the bearings are new) and the best oil pressure I can get with 20/50 when the engine is hot is 30 psi and a max at 6500 of 59 psi. I think I should just sell the pistion/rods/heads/etc in parts and just start the hell over.

GO MODULAR 4.6 :rockon:

 

[BelvedereGTX]

GO MODULAR 4.6 :rockon:

why? so he can deal with 10,000 miles of timing chains that have guides that wear out and then have to degree cams to put new chains and guides on.:dw:

 

[350Z FRENZY]

why? so he can deal with 10,000 miles of timing chains that have guides that wear out and then have to degree cams to put new chains and guides on.:dw:

:lol::lol::lol::lol::lol:

What so hard about that...Hmmmm

thats the first

 

[godfather]

why? so he can deal with 10,000 miles of timing chains that have guides that wear out and then have to degree cams to put new chains and guides on.:dw:

So how often does this happen
New news to me...( im with stupid )

 

[ponygt65]

Rings are good, no blow-by and compression is way the heck up there. It's going to be a month or so before I can tear out the cam. I have another problem, put in a new high volume oil pump (keep in mind that all the bearings are new) and the best oil pressure I can get with 20/50 when the engine is hot is 30 psi and a max at 6500 of 59 psi. I think I should just sell the pistion/rods/heads/etc in parts and just start the hell over.

Ok..cool....then I'd wager a cam issue for sure.

IDK man.....I'm not one for oil psi I'll be the first to admit that, but 30 psi, then ~60 at upper rpms sounds about right....regardless of weight because of viscosity at operating temp. I hope someone corrects me if I'm wrong though. I hate breeding ignorance. LOL

So how often does this happen
New news to me...( im with stupid )

+1......Never knew those were issues and I've owned 3 mod cars.:shrug:

 

[godfather]

+1......Never knew those were issues and I've owned 3 mod cars.:shrug:

We learn something every day :shrug:

 

[thumper_302]

I was raised with this rule (for every 1000 RPM you should have at least 10 psi). 2000 RPM/20psi 4000 RPM/40 psi etc etc etc.

 

[ponygt65]

I was raised with this rule (for every 1000 RPM you should have at least 10 psi). 2000 RPM/20psi 4000 RPM/40 psi etc etc etc.

Yes, but you're at 60 @ 6500.....I've never heard of anyone being higher that mid 60s, and that was a 7k+ redline motor.:shrug:
I be recalling wrong though.

 

[meaty mac]

One quick question, Thumper: were ALL the plugs covered in soot?

 

[meaty mac]

After reading this over again and considering the compression checks out, i think you guys are on the right track with regards to the cam. it sounds like something related to the valvetrain, whether it be the cam or valves.

I know you said you have Twisted Wedge on now. who did the valve job? were the previous heads inline?

 

[ponygt65]

After reading this over again and considering the compression checks out, i think you guys are on the right track with regards to the cam. it sounds like something related to the valvetrain, whether it be the cam or valves.

I know you said you have Twisted Wedge on now. who did the valve job? were the previous heads inline?

:beer: ALways good to have a second opinion.

 

[thumper_302]

Man, you guys are awsome. Some of the best idea's and question on the net. Car came with the heads. One of the best machine shops in the southwest did the work and also check them when we had them off this last time. Lew's Vinton Automotive.

As for the plugs. Yes, all of them are covered. I don't remeber if I told you guys this. When we had the cam set at TDC, we had the same stuff inside the intake. Now that we retarded the cam 4 degree's the intake is clean.

I am saving up for a custom ground cam. Going with:

540 Lift
108 Lobe Seperation
Duration@50 Intake 248 Exhaust 252

Small lobe seperation is to help with the altitude and the large Duration is for the big side.

 

[meaty mac]

:beer: ALways good to have a second opinion.

Thanks. usually it's worth about .02 lol ;-)

 

[meaty mac]

As for the plugs. Yes, all of them are covered. I don't remeber if I told you guys this. When we had the cam set at TDC, we had the same stuff inside the intake. Now that we retarded the cam 4 degree's the intake is clean.

I am saving up for a custom ground cam. Going with:

540 Lift
108 Lobe Seperation
Duration@50 Intake 248 Exhaust 252

Small lobe seperation is to help with the altitude and the large Duration is for the big side.

Sounds like a good, tight street cam. hopefully this cures the problem. good luck man. :beer:

 

[ponygt65]

Man, you guys are awsome. Some of the best idea's and question on the net. Car came with the heads. One of the best machine shops in the southwest did the work and also check them when we had them off this last time. Lew's Vinton Automotive.

As for the plugs. Yes, all of them are covered. I don't remeber if I told you guys this. When we had the cam set at TDC, we had the same stuff inside the intake. Now that we retarded the cam 4 degree's the intake is clean.

I am saving up for a custom ground cam. Going with:

540 Lift
108 Lobe Seperation
Duration@50 Intake 248 Exhaust 252

Small lobe seperation is to help with the altitude and the large Duration is for the big side.

Just trying to do my part in the performance community...............even if I dont' have one anymore. :lol::beer:

Sounds like a good, tight street cam. hopefully this cures the problem. good luck man. :beer:

:beer:

 

[thumper_302]

UPDATE!

Well, ground from the battery to the block and the MSD box to the same ground on the block. Plugs are burning clean now. Pulled them out today after a 5 mile in town drive and the black crap was almost gone. I could really feel the difference and decided to pull the plugs. Man was I fKn happy.

Next week we are pulling the pan to check the oil pump. Dickie at Dickie's Racing said that he can set the pump up to put out what he tell's it to by working the spring. I would feel alot better if I had just a little more oil pressure.

Last, I need to start a new thread but if anyone know's where I can get a head light switch bezel for a (79-86) Mustang. Mine broke.

Thanks for all the help.

Pete