Lonzo's 88 Coupe 3.4 DOHC build thread

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MstangsBware
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Post by MstangsBware »

Aaron wrote:It includes absolutely everything. Every part, engine mounts, engine, exhaust, wiring harness, coolant lines, custom fuel lines, everything. It also got a new set of spark plugs, fresh Mobil 1 synthetic, a Pure 1 oil filter, a new cone air filter, new intake manifold gaskets, and the later style upgraded fuel injectors. For $2250, he drops his car off, and picks it up with a high quality 3.4 swap, with no expense spared, running perfectly.

There were a couple problems with the old wiring harness that bothered me. I tore the entire harness apart, and redid most of it. As I said before, he's damn lucky he's not paying me by the hour!
That is just to damn cheap if everything works out like it is supposed to. I tried to get him to bring it to me for a 3800SC swap but your price was much lower than mine. I guess since you had most all the parts then the price was basically all labor.

You mentioned the stock fuel pump--Please tell me you didn't leave the stock original FP in the car for the swap.
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Post by Aaron »

Although I did have all of the parts, they do still have value. I figured 1000 for labor, 1000 for parts. I know it's cheap, and he's getting a good deal, and a great swap.

I am going to leave the stock fuel pump. I know that the factory pump is sufficient enough for the 3.4 DOHC, I believe it's the same pump that was used in the Z34s, and we had a stock pump in the 88GT I originally had the motor in, never any problems. So there is the concern of its age, but why fix it until it's broken?
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Post by Xanth »

Shit dude, 2 grand? I'd be saving up for one of your swaps if I lived near you.
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Post by THE PUNISHER »

Lookin good. Moar pics
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Post by MstangsBware »

Aaron wrote: I am going to leave the stock fuel pump. I know that the factory pump is sufficient enough for the 3.4 DOHC, I believe it's the same pump that was used in the Z34s, and we had a stock pump in the 88GT I originally had the motor in, never any problems. So there is the concern of its age, but why fix it until it's broken?
NO NO NO--Do not half ass the fuel management part of the swap. This is not the case where you use the phrase"Don't fix it if it is not broke". Even though the pump is starting and running the car, I will bet you $100 it is not doing the job 100%. I have witnessed this first hand with a car with a DOHC swap in it, not saying that the motor size really matters.

Get the car running with the bugs worked out and take it for a drive and test out the performance of it. Then go back, drop the tank and add a new pump. I will gurantee you that you will notice a big jump in performance out of the car.
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Post by fieromadman »

I had my dohc running on a stock pump for 2+ years... Just thought I'd put my 2 cents worth in...
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Post by p8ntman442 »

or look at the blms and int counts and see if your maxing out the injectors. Thats a lot easier than a pump swap.

Sounds like Lonzo is getting a hell of a deal.
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Post by MstangsBware »

Not saying it will not run on a 20 year old stock pump but bet it will run better on a new pump that is putting out more pressure when needed.

Just my 2 cents on the deal.
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Post by MstangsBware »

Double post some how.
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Post by Aaron »

The stock pump is the same pump that came with the engine stock. So should we all replace our fuel pumps on a regular basis? Just thought I'd throw it out there, I ran my the same DOHC on a 20 year old fuel pump, with more miles than his, and it ran perfect. And the A:F was perfect across the board, even at 1100ft altitude.
88GT 3.4 DOHC Turbo
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Post by MstangsBware »

Aaron wrote:The stock pump is the same pump that came with the engine stock. So should we all replace our fuel pumps on a regular basis? Just thought I'd throw it out there, I ran my the same DOHC on a 20 year old fuel pump, with more miles than his, and it ran perfect. And the A:F was perfect across the board, even at 1100ft altitude.
This is your swap man--Do what you think is right. I know the 3800SC swap I am wrapping up now got a new Walbro pump installed in the tank. Why skimp out on something that is cheap to replace. But like I said, it is your swap, do what you want.
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Post by Aaron »

OMFG. It isn't skimping out!

The Lumina Z34 had the exact same pump, same part number, everything, as the V6 Fiero. So does every Lumina Z34 run lean, lose power, and blow holes through pistons at 20 years? Does every car do this?

Really weird, my 1992 Z34 put down perfect power numbers, 180whp stock on a rated 200chp motor, with a 16 year old pump. I guess the next 4 years will lead to its demise?

Maybe if I was swapping in a 350hp LS1, or a 417whp turbo 3.4, it'd be a slightly different story. But I'm using the same OEM pump that came with the 3.4.
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Post by Shaun41178(2) »

$99 for a walbro 255.

I maxed out my factory pump on only 7 psi of boost on a turd iron head motor.

if lonzo doesn't want the pump replaced thats his call, but I would recommend it. My opinion.
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Post by Aaron »

Shaun41178(2) wrote:$99 for a walbro 255.

I maxed out my factory pump on only 7 psi of boost on a turd iron head motor.

if lonzo doesn't want the pump replaced thats his call, but I would recommend it. My opinion.
I ran the Fiero fuel pump up to 218whp in my Lumina, without any problems. In fact, I was pig rich throughout the dyno. And that was a motor making an easy 40whp over Lonzo's, with quite a few modifications.
88GT 3.4 DOHC Turbo
Gooch wrote:Way to go douche. You are like a one-man, fiero-destroying machine.
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Post by MstangsBware »

Aaron wrote:OMFG. It isn't skimping out!

The Lumina Z34 had the exact same pump, same part number, everything, as the V6 Fiero. So does every Lumina Z34 run lean, lose power, and blow holes through pistons at 20 years? Does every car do this?

Really weird, my 1992 Z34 put down perfect power numbers, 180whp stock on a rated 200chp motor, with a 16 year old pump. I guess the next 4 years will lead to its demise?

Maybe if I was swapping in a 350hp LS1, or a 417whp turbo 3.4, it'd be a slightly different story. But I'm using the same OEM pump that came with the 3.4.
You are missing the point dipshit. The guy came to you for a swap, which means he can't work on his own shit. So by replacing the pump now, he will not have to worry with it anytime in the future(unless you fuck up installing it). Also it is not going to hurt the performance of the car in any way but only make it better.

Like I said--It is your swap--Do what you want with it.
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Post by Aaron »

So I guess it's my responsibility to replace everything on his car that can break, that's remotely related to the engine?

Alternators go out. This one is fine. It will eventually fail. I better replace it now. $120.

Water pumps fail. This one is fine. It will eventually fail. I better replace it now. $50.

Engine blocks fail. This one is fine. It will eventually fail. I better replace it now. $1000.

Where does it end? I could go on all day. The fact of the matter is, the fuel pump is just as reliable as every other component I just listed, and nearly the same age. If Lonzo wants to drop $5,000, I will give him a 3.4 swap, and warranty it for 200k. But who the fuck is going to drop 5 grand for 210hp? I dropped 5 grand, and got 417 at the wheels. I'll take the latter.
88GT 3.4 DOHC Turbo
Gooch wrote:Way to go douche. You are like a one-man, fiero-destroying machine.
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Post by Fastback86 »

Even if that DOHC was the first one off the assembly line, it wouldn't be as old as the original fuel pump in the last Fiero off the line. Plenty of people have to replace their 20+ year old fuel pumps because they're failing now, so I wouldn't bet that this one has a long life ahead of it. Cheap insurance.
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Post by MstangsBware »

Aaron wrote:So I guess it's my responsibility to replace everything on his car that can break, that's remotely related to the engine?

Alternators go out. This one is fine. It will eventually fail. I better replace it now. $120.

Water pumps fail. This one is fine. It will eventually fail. I better replace it now. $50.

Engine blocks fail. This one is fine. It will eventually fail. I better replace it now. $1000.

Where does it end? I could go on all day. The fact of the matter is, the fuel pump is just as reliable as every other component I just listed, and nearly the same age. If Lonzo wants to drop $5,000, I will give him a 3.4 swap, and warranty it for 200k. But who the fuck is going to drop 5 grand for 210hp? I dropped 5 grand, and got 417 at the wheels. I'll take the latter.
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Your swap--Do what you want!!!!!!!!!!!!!!!!!

I was just offering up some advice, being advice you don't have to take it.
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Post by Fastback86 »

For that matter, how many miles are on that fuel pump? I know people who put 50k miles a year on their cars. Could be pretty damn worn out after 20+ years.
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Post by Aaron »

So in 3 years his entire car behind the firewall is going to start falling apart, piece by piece?

Remember kids. EVERY car you own that is older than 20 years, you should have EVERY part related to the engine repaired TOMORROW. That means fuel pump, exhaust, intake, engine block, water pump, radiator, heater core, A/C compressor, alternator, and don't forget the Evap canister.

It'd be cheaper to scrap the cars.

It will be no cheaper or easier for me to do the fuel pump now, than it would be for him to have it done when it does fail. So why do it now?
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Gooch wrote:Way to go douche. You are like a one-man, fiero-destroying machine.
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