H&R super race springs on a 4cyl.. - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 12 Old 02-24-2009, 11:57 AM Thread Starter
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H&R super race springs on a 4cyl..

I am running bils and h&r race springs on my 83 gt and love the way it feels..I am debating moving to the super race spring on the SVO since the car will see more track time..not just autox. How will the lighter 4cyl effect the spring rates? I figure the turbo 4 to be around 100#s lighter then a iron headed 302.

Am I understanding spring rates correctly?

I am running SN95 front suspension parts with koni yellows.

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post #2 of 12 Old 02-24-2009, 01:01 PM
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I don't know the numbers offhand, but with that lighter weight I'd think you could just run the H&R Race up front and the Super Race outback for a good setup?

MM Is really good about these types of questions, may want to shoot them an e-mail, or maybe Jack will post up here!


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331, AFR 185, FTI cam, 90mm LMAF/30 lb, TFS-R intake, BBK LT's, X-pipe, Spintech mufflers
Suspension:MM: TA, PHB, Rear LCA's, C/C Plates, H&R Race Springs, Bilstein HD's, SFC's, Moser 28 splines, 3.73's, Cobra brakes,10th Anniv. Cobra wheels
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post #3 of 12 Old 02-24-2009, 01:19 PM
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Quote:
Originally Posted by Stang Man View Post
I don't know the numbers offhand, but with that lighter weight...
Actually, the 2.3L turbo and the 5.0HO motors weigh the same.


Several Internet source show the 2.3L Lima turbo motor weighing in at 450#. The 5.0L HO motor is shown to weigh between 450 and 460#. So if they're not the same, they're damned close.

(For one of the more complete lists out there, see http://www.35pickup.com/mulligan/weight.txt)

Run the same springs as if there were the v8 in there and stop worrying.

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post #4 of 12 Old 02-24-2009, 02:46 PM Thread Starter
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Well that is crazy..what makes the 4cyl as heavy as the V8? On the hoist the v8 seems heavier to me then the 4cyl. Hell..I pick up the lima a few inches to get a 2X4 under it..don't think I could do that with the v8..but never tried.
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post #5 of 12 Old 02-24-2009, 04:12 PM
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Quote:
Originally Posted by gt40mkII View Post
Actually, the 2.3L turbo and the 5.0HO motors weigh the same.


Several Internet source show the 2.3L Lima turbo motor weighing in at 450#. The 5.0L HO motor is shown to weigh between 450 and 460#. So if they're not the same, they're damned close.

(For one of the more complete lists out there, see http://www.35pickup.com/mulligan/weight.txt)

Run the same springs as if there were the v8 in there and stop worrying.
I was just going off the information from the original post

1989 GT- Prowler Orange Pearl
Engine:
331, AFR 185, FTI cam, 90mm LMAF/30 lb, TFS-R intake, BBK LT's, X-pipe, Spintech mufflers
Suspension:MM: TA, PHB, Rear LCA's, C/C Plates, H&R Race Springs, Bilstein HD's, SFC's, Moser 28 splines, 3.73's, Cobra brakes,10th Anniv. Cobra wheels
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post #6 of 12 Old 02-25-2009, 05:28 PM
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Quote:
Originally Posted by gt40mkII View Post
Actually, the 2.3L turbo and the 5.0HO motors weigh the same.


Several Internet source show the 2.3L Lima turbo motor weighing in at 450#. The 5.0L HO motor is shown to weigh between 450 and 460#. So if they're not the same, they're damned close.

(For one of the more complete lists out there, see http://www.35pickup.com/mulligan/weight.txt)

Run the same springs as if there were the v8 in there and stop worrying.
I don't know if I'm buying that.....just doesn't make sense. I have fooled around with a buddies old 2.3T and it sure felt lighter than the typical 302. In driving the car, it felt lighter too...

Perhaps that weight listed is with all accessories installed??..and the 302 is w/o accessories??...

Check out that detroit deisel listed.....2448 pounds! WOW!!

91 Road Racing Fox. N/A 383W. Full MM setup front and rear with Bilstein coil-overs. 14x1.25 Wilwood 6 piston fronts with Wilwood 13x1 single piston rears.
486rwhp/ 430rwtq

Last edited by LT1HAHA; 02-25-2009 at 05:46 PM.
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post #7 of 12 Old 02-26-2009, 10:47 AM
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I wouldn't doubt the 2.3T being just as heavy as the 5.0, the cylinder head alone is a heavy piece, and takes a good bit of effort to move. I've picked up bare 5.0 blocks without much more effort than that damn cylinder head. Then tack on a cast iron exhaust manifold, turbo, and other odds and ends, I could see them being similar weights.

What will make the car feel lighter is the fact that the engine sits significantly farther back in the engine bay compared to a 5.0.

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post #8 of 12 Old 02-26-2009, 04:06 PM
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Either way, I don't think the super race springs would hurt your performance even if the engine was 100# lighter.

A 1000# spring is still 1000#

Super race are 950-1050 I think.

Race are 700-800 aren't they?

2001 Mustang Bullitt #01992
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post #9 of 12 Old 02-26-2009, 08:22 PM Thread Starter
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I'll have the head off in a few weeks..then I'll weight it for giggles.
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post #10 of 12 Old 02-28-2009, 05:00 PM Thread Starter
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I got the head off of the 2.3T. It weighs 85#. That includes full valvetrain and cam, lower intake, and fuel rail. What does a cast 302 head weigh with valves and rockers?

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post #11 of 12 Old 03-02-2009, 02:03 AM
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Quote:
Originally Posted by gt40mkII View Post
Actually, the 2.3L turbo and the 5.0HO motors weigh the same.


Several Internet source show the 2.3L Lima turbo motor weighing in at 450#. The 5.0L HO motor is shown to weigh between 450 and 460#. So if they're not the same, they're damned close.

(For one of the more complete lists out there, see http://www.35pickup.com/mulligan/weight.txt)

Run the same springs as if there were the v8 in there and stop worrying.


i did not know we made the 2.3 turbo motor at the lima plant .....i live here been on all kinds of tours huh is the 2.3 n/a the same as the turbo 2.3 motor wise
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post #12 of 12 Old 03-02-2009, 05:26 PM
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Up until 89 or so, they used the same block, crank and rods as the turbo 2.3L minus the provision for an oil return, the boss was there, but it was not drilled and tapped. The dual plug years got a small journal crank, a thinner block, and a bunch of other revisions.

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