Good luck fitting that 4.6liter into your Rx7. The motor is MASSIVE. I've had fun watching my friend work on his 98' GT(had a newer Cobra motor with a blower). It's tight in his Mustang(he'd have to do some fabbing to even fit an FMIC!).

the LS1/2/3/6/7/9 motors are nothing like their ancient brothers that you worked on in the past. Leaks? I've NEVER heard of oil leak problems with the LS1. They're now starting to hit the 300k mile mark on some of the corvettes on my forum without rebuilds.

Not to mention the Chevy 305's are junk. Everyone admits it. Why anyone would build one of them up when you can do a 327, or a 346, is anyone's guess.

Chevy Smallblocks only leak if you don't assemble them correctly...

There was a rx7 with the 4.6 swap already done for sale a few months back... Was a black fc if I remember correctly. So it can be done. Looked like it fit pretty well actually.

Was more referring to the FD's... Even still, it reminds me of guys putting VG30DETT's in their 240sx's. Cramming the suckers in there when there's other options.

Yes, but there are easy ways to side step it. I'm moving to the panhandle shortly, no emissions or inspection laws there.

in V8 i would want something DOHC, Audi, BMW, Merc, or a Northstar its a smaller displacment version of the LT5 bu is money no object LT5 no doubt. wait i just noticed the hayabusa V8 FTW!!!!!!!! it looks ike it might have a nice snug fitment into an RX-7

otherwise i would love to have a twin turbo SHO 3.0L V6, maybe a GNX motor

for inline 6 motors a RB26DETT with a corrected oiling system, a B6304F+T,or a N/A ITB 2JZ,E46 M3 motor

inline 5. B5254FT High compression low boost,B5234FT low compression high boost

INline 4 motors: 4G63/4, CA18/20DET,B4204FT,B234FT, B20B+t, D16A1+t(non vtec DOHC),F22C(F20C cams)

The DOHC engines you mention are heavy and HUGE. You should see a picture of a DOHC or SOHC engine next to the LS1. There are reasons why the LS1 is so popular, its size and weight is a big one of those, if not the biggest.

yea but i'm just not a fan of pushrods. personally i would love that H1 Busa V8 in an RX-7 with a 6spd HKS squentail trans and a 4.30 rear end with clutch type LSD

Ls2

Screw pushrods... that ancient technology doesn't make any power... :ugh2:

What's funny, is Push-rods are actually a newer design than the over-head cam. :lol:

So when people say ancient technology, they're really showing ignorance on engines.

http://en.wikipedia.org/wiki/Overhead_camshaft

http://en.wikipedia.org/wiki/Overhead_valve

Same as the people who thought the Japanese were the first to have turbos in production cars. It was actually Oldsmobile I believe in the 1950's. ;)

doesn't it say, in the first paragraph, "the later OHC"?

Not fully understanding your reference, but I didn't read the whole thing since I wasn't that interested in it.

The idea of pushrods came after the idea of overhead cam. That's my point. Pushrods are not 'ancient technology', unless you consider the combustible engine in general as ancient.

Cummins diesel, nuff said

I posted in another topic about using the parts you have laying around , its simple , a motorplate and sbc , and a powerglide . Now , trying to be original with your build, thats the diffrence . OH ,and My 2 cents is to find the audi R8 power....goodluck . Bob

LS1 would be cool, but the old motor in my R1 dyno'd over 900 hp to the wheels. Dyno queens aside, Id put a stroked 3.0l ford turbo I4, twin overhead cam converted. It would sound real close to a bridgeported 13b, and after you smoke the "rotards":wink: you could giggle when you pop the hood and their jaws hit the ground.

If money was no object, I would put a all aluminium 1000hp twin cam 2.3l turbo ford from the old Rousch indy cars in. But that motor is $7500,(and I happen to know where one is still crated and never installed/raced if someone wants one)

putting a v8 in a rx-7 doesn't make it the rx-7 anymore i think you should just stick with the rotary engine. unless you have blown it.

If it's not an RX7 anymore, then what is it? I've got a V8 in my RX7, and I need to know what to call it since it's not an RX7 if it doesn't have a rotary. I think I'll call it the Kick Ass Blaster.

Steve

shut up queer. its a pile of metal

i have a 600 hp pontiac 455 for sale someone should squeeze that one in there:icon_tup:

A rx7 is always going to be an rx7, just with a different motor. The purists will always deny this, and will always be rebuilding their motors, when we are driving ours.
I loved my 13b, and have to admit, the sounds it made were wonderful, till it ran hot, blew a seal, and wanted to drain my pocketbook for the rebuild.
If you took a poll of all the users here, I bet that if their motor was blown, and they had a choice of swapping motors once or rebuilding every 15k miles, or less, they would convert.
Even the ones who will always deny this, just to save face after all of their flaming of piston motors.
There is a reason why the fd was pulled from the American market, and I guarantee that it wasnt for the way it looked/handled. Warranty work for the blown motors killed their profits, and put them in the red. And that is from the manufactuer, not the public.

wow
 

don't use a v8

If you're rebuilding your 13b every 15k miles or less, that's on you.

That said, per the thread title, part of the issue I've always had with V8 swaps is the sort of V8 it typically involves—a camaro/corvette motor. It seems out of character with the rest of the car. If it was a an all-alluminum, flat crank, gear-driven, hi revving sort of thing, it would be far more in keeping—but then you're talking bucks, just like a rotary.

i been getting this itch to put a rotary in my neighbors boat

^what he said. I've never had a rotary blow on me in over 20 years of driving and tracking modded turbo rotaries.

You just have to know what you are doing. I've seen too many people that are too lazy to research mods before doing them and blow em up b/c of their inappropriate mods. I've also seen many people and piston mechanics misdiagnose a problem and just claim that its the engine.

If you are going through them in 15k miles increments, then you need to wonder if the problem isn't something you are responsible for.

I'm not a V8 person but it does seem pretty cool. I've got no issues with the swap but I do prefer my high revving rotary. :)