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#519467 - 17th May 2011 9:41am Mazda RX7
_Ste_ Offline


Wiki Master

Registered: 7th Aug 2005
Posts: 16055
Loc: New Brighton
Hello, I've been offered a Mazda rx7 which needs tips??? Replacing.
Anybody know how easy this is and where to get them?

This shape.

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#519470 - 17th May 2011 9:45am Re: Mazda RX7 [Re: _Ste_]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
I assume you mean rotor tips due to carbon wear or similar?

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#519471 - 17th May 2011 9:52am Re: Mazda RX7 [Re: _Ste_]
sean Offline
Smartchild

Registered: 26th Jun 2005
Posts: 541
Loc: prenton
that'll be expensive, give siverstone autosport a bell on 01244 822327 , they specialise in rotary engines

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#519473 - 17th May 2011 10:00am Re: Mazda RX7 [Re: _Ste_]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Yeah, Rhys was lookin at about 3k+ for a rebuild on his RX8 (im sure he said you could do it yourself and it didnt look too bad a job, but parts where still prohibitively expensive and he couldnt be arsed with the hassle), the RX7's don't last as long iirc due to the turbo, and the MPG is just abysmal. He sold it to a garage part-ex in the end, and let them take on the impending problems.

The RX7 is a gorgeous car and the rotory engine is amazing, but the term moneypit comes to mind.

You quite often see them going cheap, and its usually because they require a rebuild. They just dont last long, and are hurt even moreso by people who drive them like normal cars (keeping the revs below 4000 etc).

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#519524 - 17th May 2011 11:52am Re: Mazda RX7 [Re: _Ste_]
Nelzy84 Offline
Forum Guardian

Registered: 21st Dec 2010
Posts: 3354
Loc: Wirral
Ste, as Matt said if its the rotor tips your refering to in the wankel engine then rebuilds can be expensive

The rotor tips wear and are the most common reason for engine failure. The tips last around 60,000 miles in standard tune but can last longer, or indeed shorter depending on the life they've led. These days RX-7 engines are rebuilt using the more modern RX-8 rotor tips, as well as a range of high performance rotor tips being available if you've got the monies. Rebuilds of the 13B engine start at around 2500 - undoubtedly a large sum of money but compare this with the cost of rebuilding say a Skyline's RB26DETT engine - both have similar performance.

Try these dudes

http://www.dynodemon.co.uk/home.php?/technical_services
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#519832 - 17th May 2011 7:57pm Re: Mazda RX7 [Re: _Ste_]
_Ste_ Offline


Wiki Master

Registered: 7th Aug 2005
Posts: 16055
Loc: New Brighton
Cool thanks guys, I can do this myself, I just need to know where to get know where to get the tips, it's not worth replacing 1, may as well do all.
Need a price before commitment.
Had a look on eBay with no results.
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#519853 - 17th May 2011 8:16pm Re: Mazda RX7 [Re: _Ste_]
diggingdeeper Offline

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Registered: 9th Jul 2008
Posts: 10808
Loc: Birkenhead
About 400 Ste.
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#519903 - 17th May 2011 8:53pm Re: Mazda RX7 [Re: _Ste_]
_Ste_ Offline


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Registered: 7th Aug 2005
Posts: 16055
Loc: New Brighton
Is that a whole set dd? laugh
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#519914 - 17th May 2011 9:15pm Re: Mazda RX7 [Re: _Ste_]
diggingdeeper Offline

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Registered: 9th Jul 2008
Posts: 10808
Loc: Birkenhead
Yes, set of six.

Quite a lot of choice, from what I've gleaned.

original RX7 rotor seals good for 50K mile, and probably cause least wear/damage to the rotor housing.

Ceramic rotor seals last a lot longer but cost four times the price and can have a occasional tendancy to shatter (especially on turbos), destroying everything in sight.

Various people make alternative rotor seal kits (some include genuine Mazda springs in the price)

Do a search for "Apex seals" which is the proper name for the seals.
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In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#520052 - 18th May 2011 9:06am Re: Mazda RX7 [Re: _Ste_]
_Ste_ Offline


Wiki Master

Registered: 7th Aug 2005
Posts: 16055
Loc: New Brighton
Thanks mate, will do happy
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