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| Quad 4 swap (lot of pics) (Page 6/31) |
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sardonyx247
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JUN 28, 03:46 AM
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The factory specs says under 2 grams for all the rods in the same engine, so this one rod was way outa spec, now all are under 1 gram.
And yeah it is a TALL engine.
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sardonyx247
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JUN 28, 04:48 AM
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Oh, and all the pistons were within a gram of each other, so it was the rod.
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Fierobsessed
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JUN 28, 04:51 AM
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Best mileage, I'd say use a 3.61 Quad 4 getrag, and press on a Fiero's 5th gear. So you'll end up with the same gearing you are used to in 5th on your GT, and you can still sport the performance oriented gearing of the Quad 4 ratios 1st, 2nd and 4th. 3rd we all know is the same in all transmission.
As it is, the 3.94 box is still *Slightly* taller on 5th then a standard Quad 4's 3.61, it uses the Fiero's 5th gear. So at the very least, you can source the parts from that box if you want the Fiero's 5th. Plenty of options with those two style boxes. You already are fully aware of the advantages of the later differentials too. You can make a really nice transmission with what you've got on hand. One thing to keep in mind, is that the only way to get a shorter 3rd gear, is to use a 3.94 differential. That's the only reason I sprung for an SCX transmission in the first place. It's a shame the shifting was all messed up on that transmission. The gears were good though.
The gear side case on the 3.94 was very different to the older 3.61's it had a few parts fitment issues, The spots where the transmission cables are mounted, both shift and select had bolt bosses in the wrong spots. I would not use that case if you have the opportunity to swap them.
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sardonyx247
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JUN 28, 07:12 PM
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hercimer01
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JUN 28, 08:04 PM
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Nice work Dave!!
Sorry I sold the 3.4 4 speed auto Formula you built for me. I sold it cuz i finished my L67 into my 86GT. But I did buy an 88 coupe with 97K on it that I've been resurrecting for the gas mileage reason too.
The best gas mileage I got with the Formula was 26 MPG.
My L67 in my 86GT gets 23 MPG.
I'm putting a 4 speed auto in the 88 duke. I'm curious as to what I will get.
Nice work as always.  ------------------
Project Genisis Lo Budget 3800SC swap
88 Coupe under construction.
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sardonyx247
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JUN 29, 06:05 PM
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Thanks for the comment. 
I still have alot to do.
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sardonyx247
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JUN 30, 07:32 AM
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I haven't had many pics the last couple of days, had some unrelated things to take care of.
Here is the crank, this thing is HEAVY, I would say 35 - 40 lbs, heavy for a 4 cyl crank. (or prob for any cyl crank)
The oil holes for the mains go all the way through and the rods tie into the mains holes, so the rods are always getting oil, instead of only half the rotation like most engines.
The bare block all clean after the pressure washer, I also used a screwdriver and a wire brush to clean out the coolent passages.
Not even the slightest ridge on the pistons holes, this block is great, no need to bore or new pistons.
The pressure washer revealed some red paint under the balck, like some hideous past, more black paint is in order.
Here are the two gaskets sets I have. I bought one, then my cat ate one of the cam cover gaskets, so I started looking for the gasket I needed, then I found a second gasket set on ebay very cheap minus the head gasket. So it worked out great, this was years ago. They are different sets, I figured I would show pics of the differences between the two.
Here is the KS 2660
and the HS 9515 PT
I hope all these pics help someone someday.
I do wonder if I have blown up a phone or two trying to view this mobile.
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skuzzbomer
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JUN 30, 03:19 PM
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| quote | Originally posted by sardonyx247:
I do wonder if I have blown up a phone or two trying to view this mobile. |
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Nope, but you have crashed my browser countless times
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hypo327
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JUN 30, 04:28 PM
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Sweeeeeet! Thanks for sharing! Let us know how it performs!
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sardonyx247
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JUN 30, 07:06 PM
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Always remember,
If you can't keep it in your car....
Keep it wrapped, and Keep it clean.
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