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Discussion Starter #1
Hey all,

I am thinking of buying a spec v, so i joined this forum to do some research on these cars.. from what i read so far the 2 main problems are the ignition/starting problem, and the oil burning which occurs from the effed up pre cat crap.. is there anything else thats wrong with these cars.. specifically the 03 model.. i wanna get an 03 model cuz i think it looks better than the 04, but my question is , did nissan fix these issues in the 04 model? cuz my friend has an o4 se-r auto and he definitely doesnt have the oil burning issue that i know of... but im not a hundred percent on that.. anyways guys,, please let me know if there is anything else i should watch out for, and, how can i even tell if a spec v thats for sale ever had/currently has these issues?? thats the effed up part.. lol
 

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just found on wikipedia.. *sad*
Service Issues

While the SE-R Spec V was considered one of the best valued sports sedans[1], there are service issues some SE-R owners have experienced. One common problem[citation needed] involves the Intake Manifold "Butterfly" screws being loosened over time and eventually being ingested into the Intake. This would obviously cause a great deal of damage, and there have been plenty[citation needed] of SE-Rs with new engines because of this. The solution adopted by many owners was to use Loctite to lock the butterfly screws in place. Nissan later recalled 2004 and early 2005 models to have a similar procedure performed on the intake manifold. The butterfly screws were replaced with a new design and had loctite applied during installation, a mesh screen was installed as well in case a screw still became loose. Previous years including some 2004 models were refused the recall by Nissan.[citation needed]

In the exhaust system unburnt fuel that entered the Pre-Cat could potentially ignite; over time bits of the Pre-Catalytic Converter would break off and be sucked back into the engine. The QR25DE has no EGR valve, by design the exhaust valves are left open for a short period of time during the intake stroke to reburn fuel in the exhaust system, this is when particles from the Pre-Cat have an opportunity to re-enter the engine causing damage. [2] The solution to this by Nissan was to have dealers replace the Pre-Cat with a new Pre-Cat of the same design and making ECU modifications. Many owners[who?] have experienced multiple engine failures due to this, others[who?] have accused Nissan of simply putting a bandaid on the vehicles until most of their warranties have run out. Nissan has basically refused to find a solution to this problem. Many owners[who?] have again been forced to come up with their own solution which was replacing the OEM exhaust manifold with an aftermarket "pre-cat-less" manifold. This is not illegal[citation needed] in most states, except for California[citation needed] where it may not pass a visual inspection. This modification is legal[citation needed] due to the fact that only the pre-cat has been removed and the catalytic converter is still intact. This solved the problem of ingesting pieces of Pre-Cats that come apart over time by removing the Pre-cat entirely. Every year of the SE-R from 2002-2005 has been found to be capable of the same failure[citation needed]. No 2006 models have been reported[who?] as of this posting. However, 2006 models have had their own problems when Nissan switched the design of the oil rings to save costs. These engines had to be recalled due to multiple engine failures and fires.[3] These failures have also affected all 2.5L Altimas as well.
 

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its not as fast......... :( (
the sr20de is much more reliable then the qr25, when comes to modifying, the internals are stronger, revs higher, etc. You can easily slap a t25 on there and make over 200whp with no problem. I made 246whp with S4 cams and a t25 on 8psi.

also theres no recalls on the SR :)
 

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Discussion Starter #6
the sr20de is much more reliable then the qr25, when comes to modifying, the internals are stronger, revs higher, etc. You can easily slap a t25 on there and make over 200whp with no problem. I made 246whp with S4 cams and a t25 on 8psi.
thanks for the info
 
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