This is topic one word of advice to those with 4.6 engines in forum Tech Talk at Northern California Ford Owners  .


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Posted by 281n/a (Member # 1465) on :
 
they suck i blew my engine up on friday after installing a nos dry kit it ran lean on #7 cylinder drew was driving it and it blew up first try now im stuck with a car payment and the major cost of replacing my engine.I will never ever throw a power adder on this engine again until its built fords internals are a joke and their quality.At 20k mi my tranny went and now at 40k mi my engine went i have no q's about drews work it was a very very good job.My advice is to all who have new mustangs or prior cobras to the 03 don't put forced induction on these cars unless you got the $$$ to rebuild otherwise your asking for trouble if your car is paid off then go for it but now i see why people say why they race their cars they make payments on well i learned my lesson now i can hope to prevent this from happening to someone else and if anyone knows of someone who has a 99-02 gt engine please let me know thxs
 

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Posted by gR40coupe (Member # 698) on :
 
damn, what size shot did you run i thought those motors where dorable, arn't they 4 bolt main blocks we put a blower on my boys 2000 gt ran 14 poundsd of boost and his never broke.
 

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Posted by StoplightWarrior (Member # 211) on :
 
That sucks erik!!!
holy shit!!!
 

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Posted by 91sleeper (Member # 779) on :
 
First off you screwed up because you installed a NOS system. Second I hope you didnt go above a 75 shot unless you have a larger fuel pump.

Dont you still have warranty? Take all the nitrous stuff off the car and all the other mods and take it in for warranty. Say it blew up as you were getting up to speed on the freeway on ramp.
 

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Posted by Mr Paint Job (Member # 1708) on :
 

quote:

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dry kit it ran lean on #7 cylinder

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i think i found your problem and it doesn't seem to be the crappy ford internals.
 

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Posted by racercosmo (Member # 1864) on :
 
We have a 2001 4V engine sitting in the shop, new in the plastic.
 

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Posted by shade-tree (Member # 298) on :
 
sucks man. I'm test piloting a NX 'wet' EFI kit myself right now.
 

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Posted by HungryHippo (Member # 537) on :
 
shoulda stuck with the NX
sorry to hear about that though eric. 4.6 shortblocks arent too expensive now, check out an issue of mm&ff... dss and some other places sell built ones, daves mustang parts and mustang parts specialties probably have some used
 

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Posted by v6mustanglover (Member # 545) on :
 
That sucks. But you knew the risk and took it. Don't blame FORD for your engine blowing up.
 

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Posted by JohnB (Member # 969) on :
 
I had a T trim on a 97 Cobra...no problems at all. Trust me, that thing got beat on stop light to stop light...

You sure you had an adaquate fuel system?
 

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Posted by ls1rider (Member # 1677) on :
 
damn sorry to hear that eric
 

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Posted by 281n/a (Member # 1465) on :
 
i had a 100 shot on the car and the reason i say the 4.6 sucks is because i know of a lot of 5.0's that had 190 shot on em no problems at all even with no precaution such as timing or anything this kit came with a fuel enrichment system so it shouldn't have went lean on me but that's the risk i took with a dry kit one day when i have enough guts to put a power adder on its gonna bethe new nitrous express fogger kit thats coming out in january that will guarantee me not running lean and i more thing i will never buy a nos product again
 

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Posted by AaronC (Member # 86) on :
 
at least you got 40k out of yours. I got 1k on my built motor
 

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Posted by TRY2PAZ (Member # 97) on :
 
Thats what I have been saying. If you don't have the $ for a rebuild, don't screw with it, espically if its yor daily driver.
 

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Posted by 99gt-UJSTLST (Member # 584) on :
 
hey eric sorry to hear that about the engine, yea adding a power adders is always a risk.
you have to have it tuned or back the timeing off alot even 5.0 would blow if the timing is not set right. Even if you built a better motor and you dont have the right tune it will blow no matter what, tuning is always a must. I blew my second motor with forged internals cracked the same piston due to lack of tuning

it just really sucks to blow you car up, shit god nows I been their one to many times

like I said cheapest way to fix it is to buy a junkyard motor put it in and sell your heads thats the most cost effective way of doing it
 

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Posted by 2000BlackGT (Member # 283) on :
 
did you pull some timing and get colder plugs?
 

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Posted by 281n/a (Member # 1465) on :
 
chuck check emails
 

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Posted by Rev Happy (Member # 661) on :
 
Unless you are running the right spark plugs for a Nitrous setup, your motor is basically a ticking time bomb everytime you squeez...

Live and learn bro, you made a rookie mistake and the only place you should be pointing a finger at is toward yourself...

[ November 24, 2002, 08:52 PM: Message edited by: Rev Happy ]
 

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Posted by st5150 (Member # 51) on :
 
Have you taken apart the motor already to know if you ran lean or detonated? Not retarding timing with a power adder is never a good idea. If you don't understand why, you probably shouldn't be messing around with power adders.

VortechSaleen on here is making about 535HP on a stock SOHC GT motor with some aftercooled boost. His internals are holding up fine. TRY2PAZ made 475+ HP with a power adder and stock SOHC GT motor and it held up.
 

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Posted by shade-tree (Member # 298) on :
 
You can run rich as often as you'd like. You only get to run lean once
 

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Posted by 4.6 EATIN GM'S (Member # 1633) on :
 
GR40COUPE:
4.6 motors actually have 6 bolt mains like the 427's did.
sorry to hear that bro it really sucks to have a car ur still payin on when u dont have a motor for it.i havent driven my car in over a year,but the motor is almost done.
 

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Posted by 1sic91blackgt (Member # 868) on :
 
hey 281/na i may have a 01 gt motor that you might be able to buy for cheap man, let me talk to my uncle he has one siting in his gerage cause he works for ford and he got it from work. its from a 01 gt and it only has like 20k miles i believe. give me a pm or hit me up on AIM: gt91man
later

[ November 24, 2002, 10:45 PM: Message edited by: 1sic91blackgt ]
 

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Posted by Blown Mystic (Member # 476) on :
 
its always number seven on those motors. When my heads came off number 7 was fugged. NOS keeps engine builders in business.
 

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Posted by newBLUE02GT (Member # 1772) on :
 

quote:

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Originally posted by racercosmo:
We have a 2001 4V engine sitting in the shop, new in the plastic.

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quote:

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Originally posted by 281n/a:
update i just bought that engine from steve for 1100 so that gettin installed hopefully i should be riding again late next week im keepin my broken engine and by fall or winter of 03 that engine should be ready to go with 11:01 comp race ported heads,lethal weapon intake by sd wheeler,cams,3500 stall with trans brake im hoping for 11's on motor and 10's with the nx fogger kit coming out in january

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