New project,20b short block renesis in FD RX7

chrisJDM · February 06, 2008, 10:29:10 PM

hang on a minute ive just though, this guy has taken his car to carl to mod and he needs to keep noise under control, surely he has taken it to the wrong place hehe :rollin

shaunwil · February 06, 2008, 10:51:41 PM

Quote from: sweetiewellshang on a minute ive just though, this guy has taken his car to carl to mod and he needs to keep noise under control, surely he has taken it to the wrong place hehe :rollin

Only time will tell. Bet it sounds different with Rx8 ports

Shaun

Carl · February 07, 2008, 08:46:09 AM

Quote from: mullinsCarl, where are the 6 port inlets for the centre rotor?

There aren\'t as the end plates are from a 4 port engine.
Regards
Carl

Carl · February 07, 2008, 08:47:23 AM

RX8 rotars fully dressed weigh 100 grams less than fully dressed FD rotors.
Regards
Carl

Dan Norton · February 07, 2008, 12:46:04 PM

A whole 100grams hey......sooooo......not much differance at all then!?!

Looks a wicked project for sure, should be great for Pete and his drifting!

slippers · February 07, 2008, 02:01:37 PM

I have no idea about this but IF Carl is talking about the rotors then 100grams less, spinning at 3000rpm or so would make some difference?

Could someone explain it to a mechanical idiot like myself please.

Jon

interloper393 · February 07, 2008, 04:16:55 PM

Quote from: slippersI have no idea about this but IF Carl is talking about the rotors then 100grams less, spinning at 3000rpm or so would make some difference?

Could someone explain it to a mechanical idiot like myself please.

Jon

yeah im sure it`ll work the same way as a lightened flywheel? no more power but better trottle response and acceleration? prob me being an idiot again tho lol

karl_tate · February 07, 2008, 04:26:44 PM

i think that if the rotars are lighter then they are more free moving and able to rev more but i could be totally off the mark.

Timrxmotors · February 07, 2008, 04:56:37 PM

45g difference in a bare FD rotor and a bare RX8 rotor I have here,which is nothing in the over 4kg weight of a rotor.I suspect the RX8 seals weigh more,I haven\'t weighed them,yet.
The RX8 ability to rev is more due to it\'s lighter flywheel.

Carl · February 07, 2008, 06:38:33 PM

There are big disparities between the weights of RX8 rotors,the ones i have used weigh 100grams fully dressed less than the lightest FD rotors fully dressed that i have seen in stock form.
Regards
Carl

shaunwil · February 07, 2008, 06:59:07 PM

Ah right, Would have thought they will have tried to remove more mass from the outer part of the Rotor. Small amonts can make alot of difference at 9k rpm.

Learn stuff every day...

Is the Rotor in the lower bhp engine the same as the higher, or is it just the number of ports ?

How much would a bare engine like that cost ?

Shaun

travellinbob · February 07, 2008, 07:13:29 PM

does no-one in the uk lighten their own rotors or know of a company that can?

just out of curiosity?
cheers, keep posting up pics carl, not too many others on this forum doing the same.
michael.

leeroy_25 · February 07, 2008, 08:42:33 PM

Maybe a bit late in the day for this question?! What is the renesis engine all about? I am a little confused!

I think if I have read right that one of my questions I was going to post on has been answered. Can you take a 13B FD engine and turn it into a 3 or 4 rotor lump by bolting on additional housing? I figure some trickery may be required on the internals?! how easy is it? I imagine the fuel mapping must be a nightmare? how do you get over the electronics with the extra plugs etc or is this why they are often N/A?

Cheers
Lee

Carl · February 07, 2008, 08:53:32 PM

Quote from: travellinbobdoes no-one in the uk lighten their own rotors or know of a company that can? just out of curiosity?
cheers, keep posting up pics carl, not too many others on this forum doing the same.
michael.

Hi Michael,
Thanks for the kind comments.
We do rotor lightening and balancing is carried out for us by a specialist in the field.
Regards
Carl

Carl · February 07, 2008, 09:04:23 PM

Quote from: leeroy_25Maybe a bit late in the day for this question?! What is the renesis engine all about? I am a little confused!

I think if I have read right that one of my questions I was going to post on has been answered. Can you take a 13B FD engine and turn it into a 3 or 4 rotor lump by bolting on additional housing? I figure some trickery may be required on the internals?! how easy is it? I imagine the fuel mapping must be a nightmare? how do you get over the electronics with the extra plugs etc or is this why they are often N/A?

Cheers
Lee

We have built 3 and 4 rotor engines using all sort\'s of components from differing years.
The problem with a side port multirotor engine is that the inlet ports are vastly different in size on late engines to the middle ports,so using earlier plates balances this out,the other alternative being that we just use Perpheral ports for the inlets.
Regards
Carl