Does anyone here own a v8 rx-7?
Does anyone here own a v8 rx-7?
Author
Discussion

bigfatnick

Original Poster:

1,012 posts

225 months

Saturday 5th April 2008
quotequote all
Hi all,

i'm just chucking ideas about at the moment as to my next car, i really like jap rear wheel drive stuff, but i dont really like jap engines (odd, i know).

So, youtube brought it to my attention that ls1's go into both 200sx's and fd rx-7's really well, and people do it a lot, in the states, not here..

I did some research and it would appear there are no/very few right hand drive v8 (ls1 in particular) converted s14 200sx's on the web, which leads me to think it might not be that easy a job. However, theres a bloke in birmingham who fits ls1's through ls7's to rx-7's, picking up a tidy rx-7 with a blown engine cant be particularly difficult to do and this really appeals to me?

Does anyone have one of these monsters? And what sort of money does he charge for the conversion, i don't really want to ring him up to ask him when its something thats just a pipe dream at the moment, so the internet may supply me with answers!

Thanks Guys

Nick

paulshears

804 posts

220 months

Saturday 5th April 2008
quotequote all
i've seen one around Hull

its the older pop up headlight type (mk2?) in red

i don't know the owner, but i'll see if any of my mates know him or know any info on it

it passing my house pretty regular.....sounds ace biggrin

bigfatnick

Original Poster:

1,012 posts

225 months

Saturday 5th April 2008
quotequote all
yeah, i'd be interested to hear about it! i love cars with v8's but so many of them just aren't worth the hassle!

i have a friend with a cerbera, it spends more time in bits than together, then you get the v8 saloons which are mostly automatic, or the bmw m5 which costs millions to run, and the bmw 540, one of the few v8's avaliable as a manual, it would appear, you cant buy a limited slip diff which leaves us with the vauxhall monaro, which is expensive, heavy, and parts cost similar amounts to bmw parts, which leaves us with the mg zt-260, which is ace, but looks like a chavvy mg zt.

this country is rubbish for the v8 fan!

rant over!

TimDarracott

1,138 posts

244 months

Saturday 5th April 2008
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Nick, Nick Nick...

Stick to the rotary and fit a single turbo, can take you out in mine if you want!?

bigfatnick

Original Poster:

1,012 posts

225 months

Saturday 5th April 2008
quotequote all
TimDarracott said:
Nick, Nick Nick...

Stick to the rotary and fit a single turbo, can take you out in mine if you want!?
dude, when did you get an rx?

single turbo? i'd be interested to see it yeah! but i still need a v8 in my life at some point!

TimDarracott

1,138 posts

244 months

Saturday 5th April 2008
quotequote all
Had it about a month now smile

A few people have V8's on MRC, but i think like you say it's more common over in the states.

bigfatnick

Original Poster:

1,012 posts

225 months

Saturday 5th April 2008
quotequote all
cool, gonna take us for a blast at some point then?

Wadeski

8,840 posts

236 months

Saturday 5th April 2008
quotequote all
remember, street ported 13b with a loud exhaust and a loud wastegate might just make you forget about your V8 craving wink

Beefmeister

16,482 posts

253 months

Saturday 5th April 2008
quotequote all
IMO, sticking a big old lump of a V8 in an RX-7 is heracy.

The rotary engine is small, lightweight, and sits really far back, aiding the balance and handling of the car.

When you put a V8 in one, the weight distribution changes a lot, for the worse. Okay so it has that V8 sound, but it really doesn't fit for me.

Once you've driven a 'normal' RX-7 with a tuned 13B, you won't crave that V8 anymore...

I loved mine (see profile), and will have one again...

Now if i could get my old Rex and get that new V8 thats going in the Atom and Caterham, that would be a different matter, as its compact, lightweight and would sit well with the RX-7's ethos.

bigfatnick

Original Poster:

1,012 posts

225 months

Saturday 5th April 2008
quotequote all
Beefmeister said:
IMO, sticking a big old lump of a V8 in an RX-7 is heracy.

The rotary engine is small, lightweight, and sits really far back, aiding the balance and handling of the car.

When you put a V8 in one, the weight distribution changes a lot, for the worse. Okay so it has that V8 sound, but it really doesn't fit for me.

Once you've driven a 'normal' RX-7 with a tuned 13B, you won't crave that V8 anymore...

I loved mine (see profile), and will have one again...

Now if i could get my old Rex and get that new V8 thats going in the Atom and Caterham, that would be a different matter, as its compact, lightweight and would sit well with the RX-7's ethos.
from what i've gathered, the chavvy ls series with the alloy blocks weight only 20kilo's more than the rotary unit, i'm not sure about how much further forwards it sits than the rotary unit but all reports i've heard are that the weight distribution isn't messed up too much.

nick

Beefmeister

16,482 posts

253 months

Saturday 5th April 2008
quotequote all
When you look in the engine bay of a Rex the engine is on top or behind the front axle line. I've seen one with an LS2 in it, and a good 1/2 of the engine is sitting in front of the axle line.

That simply has to affect the handling.

I also struggle to believe that it only weighs 20kg more, though i will defer to your knowledge if it's so.

Just go and drive a tuned 13B Rex before you go and do anything silly, i promise you'll be blown away by it!!!!

Wadeski

8,840 posts

236 months

Saturday 5th April 2008
quotequote all
Beef what happend to your mazdaspeed RX-7? Only a few of those in the country, no?

Beefmeister

16,482 posts

253 months

Saturday 5th April 2008
quotequote all
It went to a guy in Brum. I tracked him through the Rotary CLub for a bit, but i had to stop shen he started tuning the engine, then put different wheels on it.

I mean seriously - they're rare as fook, not too many genuine ones (maybe 5 tops) in the country, and he's going to feck around with it.

To be honest i really wish i'd kept it, could've stored it even , anything to stop it being chavved... frown

GravelBen

16,338 posts

253 months

Sunday 6th April 2008
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Beefmeister said:
The rotary engine is small, remarkably heavy for its size, and sits really far back, aiding the balance and handling of the car.
EFA smile

I'd be more inclined to go Jap-GT style and drop an SR20DET in it than a V8.

Pierscoe1

2,458 posts

284 months

Monday 7th April 2008
quotequote all
Jap-style..... Lexus V8! biggrin

I'd love a V8 FD... so if anyone gets anywhere.. post up here as I'd love to see how it goes.

the cars (especially with a blown engine) can be picked up so cheap now, as can the LS V8's...

combine the two and get:

best looking car ever to come out of Japan
Awesome 400bhp/400lbft performance
best engine note
fantastic handling (yes maybe not as perfect as a standard FD, but I bet still plenty good!)
great cabin
small footprint (one of the reasons I like the FD so much.. it's about half the size of a 350Z!!)
exlusivity (the FD, let alone a v8 FD)

need I go on... it'd be fantastic!! biggrin

RichardNorris

224 posts

246 months

Monday 7th April 2008
quotequote all
I've passengered in a RX-7 with an ls1 install and was really impressed by it.

It has about 500hp, carbon bumper, bonnet, doors etc and is fully stripped out (1040kgs). It also runs 12 inch wide toyo 888's on the back!

It had phenominal grip and vast amounts of power at any revs in any gear.Handling was very nuetral considering the size of the tyres yet oversteer was easily provoked.

Thing is it is now a pure track car. I'd love to try a road version with a std ls1 engine and road rubber to see how it compares to a rotary engine car for balance and drivability.


IainT

10,040 posts

261 months

Wednesday 9th April 2008
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bigfatnick said:
Beefmeister said:
IMO, sticking a big old lump of a V8 in an RX-7 is heracy.

The rotary engine is small, lightweight, and sits really far back, aiding the balance and handling of the car.

When you put a V8 in one, the weight distribution changes a lot, for the worse. Okay so it has that V8 sound, but it really doesn't fit for me.

Once you've driven a 'normal' RX-7 with a tuned 13B, you won't crave that V8 anymore...

I loved mine (see profile), and will have one again...

Now if i could get my old Rex and get that new V8 thats going in the Atom and Caterham, that would be a different matter, as its compact, lightweight and would sit well with the RX-7's ethos.
from what i've gathered, the chavvy ls series with the alloy blocks weight only 20kilo's more than the rotary unit, i'm not sure about how much further forwards it sits than the rotary unit but all reports i've heard are that the weight distribution isn't messed up too much.

nick
n/a V8 versus the turbo'd rotary means very little real weight difference as you lose the turbos, intercoolers and piping. Weight difference really isn't going to be huge.

Balance change is allegedly not big either but will depend on the ls engine used. LS1 - cast block but cheap. LS7 - ally, lighter but pricey.

Seriously considered the V8 route when I blew my last engine but really glad I kept the rotary just went for really big ports and a big turbo!

The howl of the rotary at high revs is sublime and the idle with big ports is capable of baing just as mmmmm as any V8.

cwin

961 posts

242 months

Saturday 26th April 2008
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Hi Guys

I have one,don't believe the crap about loosing the ballence of the car it's not true,infact my car now has a better weight split with the ls2 in than it did with the single turboed twin (49.5 rear 50.5 front ls2) (50.8 front 49.2 rear rotary).Now so you no i am talking from experience here, i did 28 track days last year with the twin,The torque of the v8 is unreal 515 lbs @ only 2100 rpm maxes to 607 lbs at 6200 rpm.
Yes the car is mainly a track car but still taxed and moted.
Here is the dyno run at rc developments.



http://uk.youtube.com/watch?v=wBdVPJxqM4g

Cheers

Craig


Edited by cwin on Saturday 26th April 21:18

sniff petrol

13,124 posts

235 months

Saturday 26th April 2008
quotequote all
cwin said:
i did 28 track days last year with the twin
yikes that's a lot of driving

Vixpy1

42,697 posts

287 months

Sunday 27th April 2008
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Thought about going Supercharged LS2 when i blow the rx7 engine up (its inevitable). But i just can't escape the thought of a 20b and GT42RS.

scratchchin