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Topic: UPDATE>>FINISHED...The Sport needs help..... (Read 4551 times) previous topic - next topic

UPDATE>>FINISHED...The Sport needs help.....

Reply #30 –
Quote from: TurboCoupe50;234282
IF it has bent valves, it's a result of insufficient P to V clearance... Unless you go with notched pistons, less cam or different heads, it will happen again...


Yeah I think I would just toss the HO cam back in at this point. Start looking for a decent explorer longblock and put your e-cam in that with the gt-40p's.
[SIGPIC][/SIGPIC]

UPDATE>>FINISHED...The Sport needs help.....

Reply #31 –
Quote from: jcassity;234401
The way i see it, we should never be hitting our pistons, these 5.0's should not ever be interference engines.

They are with his combo when spinning one to valve float... Thats why the reliefs are there on E7 headed engines, gives space for the valve when they "hang" open...

With the lifter "pumped up", figure in another .100/.150 lift over the rated specs(or in his case close to .600/.650)...

Vinnie, to hopefully keep this from happening again, you can shim the rockers to minimum lifter preload... Unless the springs are weak, this should help...

UPDATE>>FINISHED...The Sport needs help.....

Reply #32 –
I know he did shim them originaly,It was the only way to get it to run right.
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

UPDATE>>FINISHED...The Sport needs help.....

Reply #33 –
Quote from: kitzdnm;234426
I know he did shim them originaly,It was the only way to get it to run right.

Then they were too tight, or at less than minimum clearance... Needs to shim to max clearance(slightly less than noisy)or maybe use shorter push rods...

UPDATE>>FINISHED...The Sport needs help.....

Reply #34 –
I need to get some really thin shims.I may have some.I'll be checking before I install the head (hopefully tomorrow).

I pulled the intake and driver side head early this morning and dropped the head off at the machine shop in the next town over.Great guy.He said it should be ready tomorrow.One of the valves on the number 5 must be bent.I looked through the exhaust port and could see light around the valve.That's why it wouldn't hold any compression (ya think?LOL.).The car still ran pretty good.It reminded me of when I had a rocker bolt back out a long time ago and that valve wasn't opening.Felt like a miss or something.Anyway,I could also see where the valve hit the piston.There's a tiny little "puppies" there.Very small.While I'm re-assembling the engine,I'll go ahead and install my shims if I can find them (order some if I can't),and my new Good Year high pressure heater,radiator and bypass hoses.Those will be nice to have.The head gasket looked good when i pulled it as well.The strut tower brace I installed last week made removing the intake and head interesting,but it was workable.The brace was too much of a bear to install,so it was not coming back off.LOL.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

UPDATE>>FINISHED...The Sport needs help.....

Reply #35 –
Take a pic of the top of your pistons,Show what flat tops look like.
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

UPDATE>>FINISHED...The Sport needs help.....

Reply #36 –
Quote from: vinnietbird;234483
I looked through the exhaust port and could see light around the [COLOR="Red"]piston.[/COLOR]


Sounds serious....:rollin: :burnout:

UPDATE>>FINISHED...The Sport needs help.....

Reply #37 –
Quote from: TurboCoupe50;234489
Sounds serious....:rollin: :burnout:


he somehow shrunk his pistons!
1979 Ford Fairmont
[/B]
5.0L/4R70W/8.8"/5-lug/3" Exhuast

UPDATE>>FINISHED...The Sport needs help.....

Reply #38 –
I edited and corrected that.I meant "VALVE",not "piston".LOL.I stand corrected.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

UPDATE>>FINISHED...The Sport needs help.....

Reply #39 –
Oh,Kitz,I'll snap a pic and post it in the morning.The piston is flat....FLAT.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

UPDATE>>FINISHED...The Sport needs help.....

Reply #40 –
I did take a pic of the piston before my batteries went bad.I'll post it when I get new batteries for the camera.

I got the head back from the machine shop around 1:00 today.I re-assembled everything,installed the new Good Year hoses and new distributor cap and rotor,and new plugs as well (I figured now is the time).I also poured in 5 quarts of Mobil 1 and filled the radiator half full before I quit for the evening.All I need to do is top off the radiator and connect the battery cables (I hate having to reprogram my stereo,I can never remember how to set the clock).Tomorrow I'll start the Sport and see what happens.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

UPDATE>>FINISHED...The Sport needs help.....

Reply #41 –
cool man you work fast. I'm surprised you didn't get a longblock with all your yard connections. I think I would have done that and saved the $$ from getting the E7's fixed.

E7's and machine shop don't really go together, just my :2c:
[SIGPIC][/SIGPIC]

UPDATE>>FINISHED...The Sport needs help.....

Reply #42 –
I did that one of miney times in my mustang I had and once it was the clutch I raged on it to harded one day and next day the RPMs would flex from like idle to redline aduring shiffting and it was the y clutch and it had like less tha 60k on it.

UPDATE>>FINISHED...The Sport needs help.....

Reply #43 –
The cost was only $30.00 at the machine shop.Not too bad for a valve replacemnt,check the surfaces,and clean it all up.....in one day.I'll probably be looking for another 5.0 soon and working up a 306 over a period of time as money allows.The engine has been fine for months with the E303 and those flat tops.It was my fault for over revving.Lessons learned.It was relatively painless,just time consuming.Everything is back together except the PCV valve,brake booster vacuum,and water in the radiator.Oh,and I need to detail the engine.Lots of polished aluminum under the hood looking pretty poorly right now.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..
 

UPDATE>>FINISHED...The Sport needs help.....

Reply #44 –
Wow only $30, thats not bad at all. I thought you would be in the $150- $200 range. Around here nobody want to do anything for less than that. Good deal :)
[SIGPIC][/SIGPIC]