Mazda Rotary Club

General => General Technical => Topic started by: Hy-Performance on August 07, 2004, 01:59:04 PM

Title: MPG and Performance
Post by: Hy-Performance on August 07, 2004, 01:59:04 PM
Hi guys,

At the moment i have a Supra TT, and am considering buying a RX7 for the business as a second show car :)

I have never driven one, what is performance like, handling, MPG etc....

Also, is it true they need a rebuild every 50k miles, and they run v hot????

Kindest Regards,

Chris
Title: MPG and Performance
Post by: gsb876 on August 07, 2004, 03:36:31 PM
Hi Mate,

yep they do run very hot at times, was stood in traffic earlier and water temp jumped from 77oc - 95oC!!!

The mpg differs from each but generally you\'re looking at 18mgp on a good day.

Performance / handling more than makes up for the heating thing, as standard you\'re looking at 280bhp depending on model, which i believe is 0-60 in 5.3secs, twin turbos can manage anything up to 360bhp with mild mods, the single turbo rx7\'s will make over 400bhp.

Engine does need rebuilding, but that will be from 50k - 75k depending on how well they\'ve been treated in the past, best to buy one which has had a rebuild already.

Goodluck chap
Gurj
Title: MPG and Performance
Post by: Shark on August 07, 2004, 03:55:45 PM
just to add to Gurj\'s comments on rebuilds.  If you;re planning this as a show car it;s probably worth noting that although engine rebuilds on rotary engines are more common than on their boinging counterparts, rebuild on a rotary can be done for as little as £1500 assuming various internal parts haven;t been destroyed.  Obviously this can strecth based on parts required and any mods such as porting, but it seems a point often missed that.

Try getting a bionger rebuilt for that kind of money.
Title: MPG and Performance
Post by: gsb876 on August 07, 2004, 03:57:59 PM
Forgot about that Sharky baby,

if you\'re looking for big power then if you require a rebuild the porting can be done there, people will argue over which is best though either street port or bridge port, but i\'m sure theres a thread on here about that somewhere???:)
Title: MPG and Performance
Post by: Shark on August 07, 2004, 04:07:24 PM
not trying to extol virutes of rebuild bud.
other than an opportune time to port and suchlike, not sure there are many virtues of taking a trip to rebuild city!!!

Just thought Chris should be aware that rebuilds are more frequent on rotaries, but they are less expensive.  As a commercial point more than anything else.  The increased frequency offset by reduced cost.

maybe I should\'ve just said that.:rollin