quick s5 NA (non turbo) questions

no_boingers · February 14, 2011, 07:37:56 AM

oh dear... that old chestnut... I\'ll start...

It should be Â£205.

http://www.direct.gov.uk/en/Motoring/OwningAVehicle/HowToTaxYourVehicle/DG_10012524

no_boingers · February 14, 2011, 08:05:21 AM

Essentially you pay according to the "cc" value written on your V5.

Basically, the rotary engine has a displacement of about 1250cc (I forget from memory the exact numbers for the 12A/13B engine). DVLA then apply a made-up "multiplcation factor" to allow for the fact that we get 2 bangs per revolution rather than 1 with the otto cycle engine. Hence the figure of 2200-2600 engine capacity for various RX7s.

This of course puts it in the >1300cc band for road tax. Some people argued this was wrong and have successfully got their V5 amended to say 1250cc rather than 2600c and are therefore paying only Â£125. (They had to get a formal letter from Mazda UK saying the car was registered wrongly and was actually only 1250cc). However DVLA got wise to this ruse a few years ago and have stopped accepting any new V5 "corrections" of this sort.

There is the principle of course that you pay according to the power output of the engine in which case all RX\'s should be paying Â£205 (or more!!). The corollary is that road tax is a scam and it shouldn\'t be a "tax on power" and we should all be paying Â£125 (or less!).

Brett · February 14, 2011, 08:33:41 AM

*cough* 1308cc *cough*

However, if the GOVT decided 30 years ago to tax at 1.8x and 2x capacity (12a & 13B respectively) then you had better pay it... I can forsee a time when the powers that be revisit the case and start claiming back taxes from those who have re-registered the cars as a lower cc....

no_boingers · February 14, 2011, 08:41:31 AM

Indeed - I think we should keep a low profile for the benefit of those *ahem* lucky people *grrrr* who have managed to get reduced tax. As you say - shout too loud and the DVLA will rescind all the rulings and try and claim back tax!

Kamatari · February 14, 2011, 10:39:15 AM

fair enough, sure all the websites that allow you to check how much tax is going to cost should be changed/updated as every where just shows the lower price which is quite confusing!

thanks guys!

Now to try and get some information on porting

Brett · February 14, 2011, 10:52:04 AM

Here you go!

http://www.rotaryengineillustrated.com/porting/15.html

Skifledanabit · February 14, 2011, 12:09:34 PM

6 months = Â£112.75 tax

Kamatari · February 16, 2011, 01:20:15 AM

Next question

The rear wiper doesnt seem to be working right, the motor works and theres power going to the connecter but when you try and operate it with the switch nothing happens but the washer jets work, anyone got any ideas about this?

I\'ve also got an idling question but ill post that another time

Skifledanabit · February 16, 2011, 02:03:15 AM

checked the inside of it? see if the motor is engaging the wiper arm?

dthebuk · February 16, 2011, 04:06:14 PM

aha an s4.5

is the idle problem something to do with it hunting on warm up? common one that

Kamatari · February 16, 2011, 04:41:11 PM

even after it warms up it still idles high but seems to run a little rich..

next question.. does anyone know where i will find the gear stick(shifter) lower bush?

1990_fc3s_t2 · February 16, 2011, 05:10:11 PM

So 1986 to 1988 is series 4 but anything 1989 to 1991 is series 5.
Ive come to the conclusion all s5 n/a\'s have a s4 front bumpers but as far as i know or can think of at mo thats the only thing they share? Maybe has something to do with there being no n/a cars built for japan? who knows, Wonder if the yank n/a\'s are the same? Like they have n/a verts where all ours are t2\'s. :confused:

For your shifter bush maybe give clive a bell or failing that your mazda dealer or mazdatrix in the USA. http://www.mazdatrix.com/index.htm

Kamatari · February 16, 2011, 05:24:26 PM

hmm clive? im still quite new so if you don\'t mind me asking..who\'s that?

as for the mazda garages, ive found one and they said its a 2.50 part but need to pop down to put it on order, phoned another and they said which bit as theres 5 parts :S i need to get hold of a manual or something haha

1990_fc3s_t2 · February 16, 2011, 05:42:41 PM

Clive\'s the daddy! him and lisa gave birth to the club about 10 years ago i think. He also runs mazda rotary parts Mazda Rotary Parts, Trusted supplier of Mazda RX-8 & RX-7 Performance, OEM & Race Parts, supplying Rotary owners across the World.

As for manuals ive got a haynes thats pretty good, saw one on ebay the other day quite cheap. Links to the factory sevice manual can be found here. :Thumbs-up http://www.rx7club.com/showthread.php?p=5131218#post5131218

EDIT: TeamFC3S.org website is being overhauled. Website down atm.

dthebuk · February 16, 2011, 07:44:14 PM

Quote from: 1990_fc3s_t2;743225So 1986 to 1988 is series 4 but anything 1989 to 1991 is series 5.
Ive come to the conclusion all s5 n/a\'s have a s4 front bumpers but as far as i know or can think of at mo thats the only thing they share? Maybe has something to do with there being no n/a cars built for japan? who knows, Wonder if the yank n/a\'s are the same? Like they have n/a verts where all ours are t2\'s. :confused:

For your shifter bush maybe give clive a bell or failing that your mazda dealer or mazdatrix in the USA. http://www.mazdatrix.com/index.htm

S5 N/a\'s wern\'t available in this country.

there were two types of S4 available in the UK, the early ones with the flat spoiler and the later (i call them s4.5\'s) with the wrap around spoiler.

Both were very similar with very minor differences, they both had the same engine though the ignition on the s4\'s is done with a CAS and the S4.5\'s is a dizzy (i think?)

UK TII are S5\'s, N/a S5\'s look like TII\'s without the bonnet scoop. S4 TII\'s were not available in this country and look like Egi\'s but with a bonnet scoop.
S4\'s and s5\'s have different interior, bumpers and some different suspension bits. these are the easiest way to tell the difference

S5 NA

S4 N/a