me and my friend are buildin cars. im rebuilding an 83 12a rx7 and my firend is building up and nissan ser. if we both go wit a full exhaust with performance headers, which car should be faster at that point.

 

loosen his lug nuts and pull a spark plug wire... you can't lose!

 

lol haha if we put money on it no doubt

 

With just full exhaust with headers he'll win, depending upon how good of drivers you two are. If you streetported you'd have a better chance

 

I dunno, Sentras are not fast. It would be close, but if yours ran perfect then you should win.

 

Wow Sentra it's not really a sentra I don't know what year it is but I am going assume it's a early to mid 90's sentra. With the infamous SR20D motor, one of the greatest 4 cyl. motors of all time. I am not ******* a RX7 by no means. With the mod's you have performed I don't think you stand a snowballs chance in hell on this one. <----SE-R

 

It's a Sentra SE-R so it's one of the newer ones. Most newer 4 cylinders can beat our 12A's but it really depends on the drivers

 

I will agree that the SR20DE motor is a great motor, but it is by no means fast. The turbo version of that motor is. My girlfriends G20 had an SR20SE motor in it and my RX-7 would kill that thing. That is the same motor that same in the earlier SE-R's. Now if it is a newer one then yes you will have a lot more difficult time beating that one.

 

The nissan sentra was never really fast by any means. Standard amount of hp for a car of that size, but they can carve the curves pretty good. They are good autocross cars from my understanding.

 

Actually the early 90's SE-R are no slouches my friend had one a couple of years ago when I fist got my 240sx and my friends sentra pulled on me by a car. we where both stock.

Now my Fb vs my 240 both stock even thought the RX felt like it pulls harder will still loose to my 240sx every time so you make your own decisions

 

I mean they quick for what they are, but lets face it, either way this is gonna be the battle of the slow cars. Neither of them are fast and depending on how good each car runs and how good of drivers they are with matter who wins. I am running a stockport N/A 12A with stock carb. (have other bolt ons) and I pulled the **** out of one of those.

 

a G20 is an overweight porker next to the Sentra SE-R
we had 2 90's SE-Rs at the auto-x back when I ran my 92 MX-3 GS
my MX-3 was faster than my 12A I owned back then stock vs. stock
the SE-Rs were faster than my MX-3
of course not much faster
and all these cars are not 'fast'
but comparing them to eachother there are differences in how slower each one is

 

All I am saying is that I personally think it is gonna be alot closer then everyone is thinking. The G20 does weigh more, but not to the point where you could notice a huge diffirence. The SE-R is lighter and faster, but it is still not fast.

 

^^^I agree

 

that's true...none of the aforementioned cars can hand a serious spanking to the other...depends on who gets out of the gate faster
drink a red bull prior to the race

 

Looks like the sentra se-r is faster... Here is the 0-60 and quarter mile time when they were factory stock

1992 Nissan Sentra SE-R 8.1 16.2
1993 Nissan Sentra SE-R 7.6 15.8
1994 Nissan Sentra SE-R 7.4 15.8

1979 Mazda RX-7 GS 9.2 17.0
1982 Mazda RX-7 GSL 9.7 N/A
1983 Mazda RX-7 GS 9.5 17.0
1984 Mazda RX-7 GSL-SE 7.8 15.9
1985 Mazda RX-7 GSL 9.9 17.4

 

Yes the sentra is faster stock, but the 12A is gonna respond a lot better to power mods then the SR20DE. The 12A is way to bottled up from the factory. So in turn little things make a big diffrence.

 

I do agree the 12a is bottled up from the factory compared to the SE-R I own one of both of these cars which gives me a on the fence stand point. I have a 98 SE-R which is my daily driver. I also Have a 85 Rx7 12a. I have raced both cars serveral times and I always put my friend in the SE-R. Mods to car as follows.

SE-R
Full Ex.
ACT Racing Clutch
Hotshot cold air intake
Short Shifter
50 Shot Nitrous
Glow Plugs
Lighting Flywheel
RX7
Full Ex from WSP
3 Puck Racing Clutch
Rat's nest Rem.
A/C Rem
Shot Throw Shifter
HomeMade CAI
Glow Plugs

Everytime I have put these cars against each other in the 1/4 miles the SER walks off on the RX7 by about 4 carlengths. But like I said I love both car for seperate reasons. <--- In my book both cars get a 10!!!

 

I agree

 

The Rx-7 with all of the bolt-ons done AND proper tuning (ignition timing and carb jetting or preferably EFI) done will be faster than the Sentra with all of its bolt-ons AND be more fun to drive. This does not include nitrous but if you would include it properly on both cars the 12A would still be ahead.

And the 3S-GE/3S-GTE trumps the SR20 and the 13BT trumps them all.

 

take the nitrous off the sentra and the seven has it..( I smoked a Sentra ser vspec with my GSLSE) he never cought up... at take off I was faster then he cought up but after 3rd gear I was gone

 

if by "rebuilding" you mean rebuilding the engine, you shouldn't be rev-ing past 300 rpm.

If not, then you have old engines and performance will depend on the past.

Hint, you will have the edge in handling.

 

he has an early 90's sentra ser

 

Just do all the little bolt ons and make sure it is runny top notch and you shouldn't have a problem (agian depending on how good you can drive).

 

get a stuffed animal..preferably a snuggle bear
dip it in gas prior to the race...
at the start..light it on fire
toss it into the sentras cockpit
enjoy your win!

all hail the snuggle bear