• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

Progress Thread Hoopty v2.0 - It All Snowballed

  • Thread starter Thread starter hoopty5.0
  • Start date Start date Apr 15, 2019
Prev
  • 1
  • …
  • 4
  • 5
  • 6
  • 7
  • 8
  • …
  • 89
Next
First Prev 6 of 89 Next Last

hoopty5.0

mechanicus terribilis
15 Year Member
Dec 14, 2010
7,786
6,939
214
SW Houston
May 28, 2019
#101
  • May 28, 2019
  • #101
a91what said:
hmm... I wonder if the timing is wondering with RPM
Click to expand...
have you had a spare minute to look at the logs I sent Friday? I got a couple of pulls logged.
 

a91what

SendMeUrDataLog
10 Year Member
Apr 6, 2011
10,739
6,721
214
Hillsborough county
May 28, 2019
#102
  • May 28, 2019
  • #102
yeah i took a look at them, they dont show anything really wrong.... besides being overly rich, the tune has about 24* of timing in it at 150kpa.. or 7psi thats not excessive unless you have high compression or gas.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,260
17,944
224
Massachusetts
May 28, 2019
#103
  • May 28, 2019
  • #103
Well, look at the bright side. Now you can at least dig there and make sure things are doing up to snuff with regards to your standards.
 

hoopty5.0

mechanicus terribilis
15 Year Member
Dec 14, 2010
7,786
6,939
214
SW Houston
May 28, 2019
#104
  • May 28, 2019
  • #104
Mustang5L5 said:
Well, look at the bright side. Now you can at least dig there and make sure things are doing up to snuff with regards to your standards.
Click to expand...
LOL. Standards. BAAAAHAHAHAHAHAHAHAHAAaaaaaaaa

In all seriousness, I can't really do much right now other than stick another gasket in there and hope it lives.
 

HotFox

15 Year Member
Jan 5, 2009
1,052
660
164
SE Michigan
May 28, 2019
#105
  • May 28, 2019
  • #105
Hmmmm I wonder if the overly rich can actually put more pressure on the head gasket? That creates a hydraulic in the cylinder on the exhaust stroke. Do you smell any fuel in the oil? Seem running that rich you would be getting some cylinder wash?
 

CarMichael Angelo

my rearend will smell so minty fresh,
15 Year Member
Nov 29, 1999
10,641
8,909
234
Birmingham, al
May 29, 2019
#106
  • May 29, 2019
  • #106
I'm betting small chambers, and flat top Pistons. A flat top 351 with a 69 cc head is a 10.7:1 engine.
 

hoopty5.0

mechanicus terribilis
15 Year Member
Dec 14, 2010
7,786
6,939
214
SW Houston
May 29, 2019
#107
  • May 29, 2019
  • #107
HotFox said:
Hmmmm I wonder if the overly rich can actually put more pressure on the head gasket? That creates a hydraulic in the cylinder on the exhaust stroke. Do you smell any fuel in the oil? Seem running that rich you would be getting some cylinder wash?
Click to expand...
I honestly haven't had time to mess with it - I'll try and look at it this evening. But it was only a point rich at WOT, cruise was at or near stoich.

CarMichael Angelo said:
I'm betting small chambers, and flat top Pistons. A flat top 351 with a 69 cc head is a 10.7:1 engine.
Click to expand...
But it's a stock long block. E7 heads are 64cc if I'm not mistaken. "small" chambers for SBF are in the neighborhood of 58cc. But this is all guesses until I can get in there and look. That's the other thing though, now that I'm on it. 10psi through an E7 head is a whole lot less air than 10PSI through any aftermarket head with larger runners. The car might have been making 350 hp at the crank... maaaaaybe? Something else has to be going on.
 

a91what

SendMeUrDataLog
10 Year Member
Apr 6, 2011
10,739
6,721
214
Hillsborough county
May 29, 2019
#108
  • May 29, 2019
  • #108
yes there is an issue somewhere and its a major one.

Being overly rich can have an adverse affect in the cylinder.... but you have to be stupid rich [below 10] this can actually lift a ringland....
 

CarMichael Angelo

my rearend will smell so minty fresh,
15 Year Member
Nov 29, 1999
10,641
8,909
234
Birmingham, al
May 29, 2019
#109
  • May 29, 2019
  • #109
hoopty5.0 said:
I honestly haven't had time to mess with it - I'll try and look at it this evening. But it was only a point rich at WOT, cruise was at or near stoich.


But it's a stock long block. E7 heads are 64cc if I'm not mistaken. "small" chambers for SBF are in the neighborhood of 58cc. But this is all guesses until I can get in there and look. That's the other thing though, now that I'm on it. 10psi through an E7 head is a whole lot less air than 10PSI through any aftermarket head with larger runners. The car might have been making 350 hp at the crank... maaaaaybe? Something else has to be going on.
Click to expand...
I think that's wrong.
I have 100 cubic inches less than you. And all through the end of the last year, I ran that engine on the gate spring at 7psi. And my guess is 350 hp on my weanie assed engine at 7 psi. An Aussie Crossflow head is cast based on Late 70's technology. ( read,....not any better than what you got) my valves are 1.75/1.5" respectively. a turbo forces a weak head to flow air. Granted, a better head will flow more and make more power at a given boost level, but 10 psi on those heads with 351 ci under them has got to be at least 400 h.p.
The factory 351 c9ve "4bbl" head was 69 cc, w a 1.84" intake valve, and a 1.54 exhaust valve. according to factory specs was rated at 10.7:1 CR, and made 290 hp/385 tq.
So then,.. If those heads aren't 351 heads, and are 5.0 heads with an even smaller chamber by 5 cc's...........Man!....we're talking over 11:1 with a flat top piston.
Cylinder pressure is killing head gaskets here.
 

hoopty5.0

mechanicus terribilis
15 Year Member
Dec 14, 2010
7,786
6,939
214
SW Houston
May 29, 2019
#110
  • May 29, 2019
  • #110
CarMichael Angelo said:
I think that's wrong.
I have 100 cubic inches less than you. And all through the end of the last year, I ran that engine on the gate spring at 7psi. And my guess is 350 hp on my weanie assed engine at 7 psi. An Aussie Crossflow head is cast based on Late 70's technology. ( read,....not any better than what you got) my valves are 1.75/1.5" respectively. a turbo forces a weak head to flow air. Granted, a better head will flow more and make more power at a given boost level, but 10 psi on those heads with 351 ci under them has got to be at least 400 h.p.
The factory 351 c9ve "4bbl" head was 69 cc, w a 1.84" intake valve, and a 1.54 exhaust valve. according to factory specs was rated at 10.7:1 CR, and made 290 hp/385 tq.
So then,.. If those heads aren't 351 heads, and are 5.0 heads with an even smaller chamber by 5 cc's...........Man!....we're talking over 11:1 with a flat top piston.
Cylinder pressure is killing head gaskets here.
Click to expand...
No no. This is a bone stock 302. No 351 anymore.
 
Reactions: RangerJoe

RangerJoe

I leave the horn on while driving
15 Year Member
Apr 26, 2010
2,560
1,146
184
Georgia
May 29, 2019
#111
  • May 29, 2019
  • #111
Mike's been drinking again....
 

CarMichael Angelo

my rearend will smell so minty fresh,
15 Year Member
Nov 29, 1999
10,641
8,909
234
Birmingham, al
May 29, 2019
#112
  • May 29, 2019
  • #112
hoopty5.0 said:
No no. This is a bone stock 302. No 351 anymore.
Click to expand...
I coulda swore you said this new car had a 351 in it.

Ok then,...all that stuff I've been sayin?......................
Never mind.
 

95BlueStallion

My assy trans to myself
15 Year Member
Feb 22, 2007
5,126
3,091
214
Cedar Rapids, Iowa
May 29, 2019
#113
  • May 29, 2019
  • #113
Good talk guys.
 
Reactions: Davedacarpainter

hoopty5.0

mechanicus terribilis
15 Year Member
Dec 14, 2010
7,786
6,939
214
SW Houston
Jun 17, 2019
#114
  • Jun 17, 2019
  • #114
Man, I had to go back a few pages to dig this up!

Late last week, I began slowly tearing the motor down to get ready for a father's day wrench-a-thon (that's what I asked for, a day in the garage). Below are the driver's side bank of plugs, and it should be pretty obvious who the victim is here:



So by Sunday, the motor was mostly torn down. Overall, it was a pretty pain-free process and I almost enjoyed it. Here is the busted gasket:




So this is on a pretty conservative tune. High ten/low eleven AFR's, not a lot of timing, and 10psi. So, we're going to back the boost down to 6psi or so and hope that is below the threshold of damage.

I ALMOST got it running last night, except O'Reilly fudged my order, so the intake gaskets didn't come in. So that was a major let down.
Also, I did this, and didn't notice until I had tightened all the rockers down and put the valve cover back on.




So that was a fun exercise.

Anywho, we should be back up and running in short order.
 
Reactions: Mustang5L5 and RaggedGT

stanglx2002

CT Material here
15 Year Member
Jul 7, 2005
1,563
1,110
164
Jun 17, 2019
#115
  • Jun 17, 2019
  • #115
Good to see you back at it. Its always a good day when you get some garage time. Hopefully it will be back on the road soon for you.
 

hoopty5.0

mechanicus terribilis
15 Year Member
Dec 14, 2010
7,786
6,939
214
SW Houston
Jun 17, 2019
#116
  • Jun 17, 2019
  • #116
stanglx2002 said:
Good to see you back at it. Its always a good day when you get some garage time. Hopefully it will be back on the road soon for you.
Click to expand...
I hope to be back on the road soon. From what I could tell, the only issue is the one cylinder based solely on looking at the plugs. I hope this is it!!
 

RangerJoe

I leave the horn on while driving
15 Year Member
Apr 26, 2010
2,560
1,146
184
Georgia
Jun 17, 2019
#117
  • Jun 17, 2019
  • #117
Did you check the heads and deck for straightness? This guy got so fed up with it that he sold the car. I don't believe it will be as easy as replacing gaskets and turning the boost down.

Good luck though, I hope you figure it out.

Joe
 

hoopty5.0

mechanicus terribilis
15 Year Member
Dec 14, 2010
7,786
6,939
214
SW Houston
Jun 17, 2019
#118
  • Jun 17, 2019
  • #118
RangerJoe said:
Did you check the heads and deck for straightness? This guy got so fed up with it that he sold the car. I don't believe it will be as easy as replacing gaskets and turning the boost down.

Good luck though, I hope you figure it out.

Joe
Click to expand...
The only straight edge i had was a metal ruler, but nothing stood out as odd. I spent a few minutes moving it around and shining a light to see if there were any gaps. But at this current juncture, i don’t have any money to throw at it, and i refuse to have it sit, so it’s going to go back together.
Maybe there was something in the timing he missed, maybe he was working out the tune, who knows.
 
Last edited: Jun 18, 2019

hoopty5.0

mechanicus terribilis
15 Year Member
Dec 14, 2010
7,786
6,939
214
SW Houston
Jun 17, 2019
#119
  • Jun 17, 2019
  • #119


Almost done. Really not a bad project. Cross your fingers it’ll hold together enough to cruise
 
Reactions: Olivethefet, 95BlueStallion, Mustang5L5 and 3 others

CarMichael Angelo

my rearend will smell so minty fresh,
15 Year Member
Nov 29, 1999
10,641
8,909
234
Birmingham, al
Jun 18, 2019
#120
  • Jun 18, 2019
  • #120
hoopty5.0 said:


Almost done. Really not a bad project. Cross your fingers it’ll hold together enough to cruise
Click to expand...
You gotta do something about those wires.....they bug me.
 
Prev
  • 1
  • …
  • 4
  • 5
  • 6
  • 7
  • 8
  • …
  • 89
Next
First Prev 6 of 89 Next Last
You must log in or register to reply here.

Similar threads

J
Progress Thread Family member 1989 GT- Backstory and updates
  • JRC99
  • Apr 19, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
15
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Oct 26, 2025
JRC99
J
Progress Thread The Mach Returns - Update/build thread
  • squeak93
  • Feb 20, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
5
Views
350
1996 - 2004 SN95 Mustang -General/Talk- Jun 1, 2026
squeak93
Place to Avoid: Jamison Auto Group in Gulfport, MS
  • D Durden
  • Oct 20, 2025
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • 2 3
Replies
46
Views
3K
1965 - 1973 Classic Mustangs -General/Talk- Jul 16, 2026
Noobz347
Progress Thread Giving an abandoned 88 GT project a new chance at life
  • jaketractor
  • Jan 9, 2025
  • Fox 5.0 Mustang Tech
  • 2
Replies
27
Views
2K
Fox 5.0 Mustang Tech Jul 20, 2025
Noobz347
For Sale 94 Cobra 408w AOD Project For Sale
  • Labora
  • Oct 11, 2024
  • SN95 Mustangs For Sale (1994-04)
Replies
1
Views
1K
SN95 Mustangs For Sale (1994-04) Apr 7, 2025
Labora
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?