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Topic: Just bought 1986 Base C4 with 3700 miles starts runs then.....

in Forum: C4 Engines


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Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (4/14)
 1/10/24 5:30pm
neonedge
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Joined: 1/10/2024
Posts: 2

Is this an aluminum or CI head version?

Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (5/14)
 1/11/24 10:12am
LilRicky53
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Sun City Center, FL - USA

Vette(s):
1986 Corvette white convertible


Joined: 12/22/2023
Posts: 6

Thanks so much for your suggestions!

Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (6/14)
 1/11/24 10:13am
LilRicky53
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Sun City Center, FL - USA

Vette(s):
1986 Corvette white convertible


Joined: 12/22/2023
Posts: 6

I honestly don’t know…how would I verify?  

Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (7/14)
 1/11/24 10:26am
manchester
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Equinunk, PA - USA

Vette(s):
1993 LT1 convertible triple black 4L60 2003 Zo6 Electron/Black 6 sp


Joined: 11/12/2017
Posts: 57

An aluminum head is lighter and stays relatively shiny when cleaned up with solvent. A Cast Iron head will be dull when cleaned up, and heavier. Aluminum is softer and will scratch or dent easier. Cast Iron is harder, and will not deform as easy. 

Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (8/14)
 1/11/24 11:02am
LilRicky53
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Sun City Center, FL - USA

Vette(s):
1986 Corvette white convertible


Joined: 12/22/2023
Posts: 6

Thanks for suggestion

Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (9/14)
 1/11/24 11:03am
LilRicky53
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Sun City Center, FL - USA

Vette(s):
1986 Corvette white convertible


Joined: 12/22/2023
Posts: 6

Thanks!  Learned something new from you.  Will check next time under the hood!

Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (10/14)
 1/15/24 9:52am
Bob DeCardenas
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Cocoa, FL - USA

Vette(s):
1990 C4 convertible Polo green/tan interior&top 1991 C4 ZR-1 red/tan 2020 C8 coupe Rapid blue/silver stripe/red interior


Joined: 8/21/2022
Posts: 7

Check your fuel pressure, the fuel pump has a tendency to fail. Also with that low mileage the tank has a tendency to collect moisture. You can YouTube either of those jobs, the fuel pressure kit is available at a reasonable price on Amazon. BTW you will enjoy your new addition. I started with a 1990 convertible with 145,000 miles then added a 1991 ZR-1. I never get tired at looking at how beautiful they are.

Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (11/14)
 1/15/24 9:56am
LilRicky53
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Sun City Center, FL - USA

Vette(s):
1986 Corvette white convertible


Joined: 12/22/2023
Posts: 6

Hey! - THanks for your suggestions!  It's so frustrating as it happens EVERYTIME it hits about 178-180 degrees. Shut off - let it sit - fires right back up.  Will look into the fuel pump suggestions!  Enjoy your Vette!

 

Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (12/14)
 1/30/24 4:17am
Dennis L Brooks
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Williamsburg, OH - USA

Vette(s):
1985 light blue metallic bone stock 4+3 coup


Joined: 11/11/2019
Posts: 13

 

 



|UPDATED|1/30/2024 2:17:50 AM (AZT)|/UPDATED|
Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (13/14)
 2/7/24 12:43pm
lotus
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Caldwell, ID - USA

Vette(s):
Black 1987 Corvette Engine-383, 450 HP. Transmission- 700R4 with shift kit and 2300-2500 monster torque converter Wheels- 9 1/2 front, 11" rear.


Joined: 11/26/2017
Posts: 4

Just use a magnet, won't stick to aluminum.

Re: Just bought 1986 Base C4 with 3700 miles starts runs then..... (14/14)
 2/21/24 4:26pm
Geno56
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Battle Creek, MI - USA

Vette(s):
1993 40th Anniversary Corvette, 6 Speed, Ruby Red


Joined: 2/10/2024
Posts: 1

That sounds like the problem I had with my ‘93 but it is li  oh ely something else. The 93 cars have bad distributors which often need to be replaced. Just in case, has someone checked your distributor?

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