Ianetti Apex Seals

[Grizzly]

I have found this link if anyone is intrested.

http://www.scuderiaciriani.com/rx7/apex_seals.html

BTW I love the Wood box they come in, Nice touch.

Chris

[Glenn Butcher]

Excellent Chris, thanks for this - really comprehensive information on there also.

[ScuttleRX]

Are the \'advanced carbon\' iannetti seals advertised here the ceramic ones that you have been discussing, or are they different.

Sorry if that sounded slightly dense but im not sure what the ceramic ones are made from, didnt know if they was some carbon in them hence the link referring to them as advanced carbon.

If they are different could someone tell me the pro\'s and con\'s between them

Cheers

Andy

[g11ary]

I believe they are the ceramic ones, they dont make two types of carbon as far as Im aware.

[Timrxmotors]

Iannetti seals,my favourite subject! I bought a set for my car,12A turbo,about a year ago.I never fitted them after seeing the damage to an FD engine when they break.I have now fitted them,because the mazda apex seals warped,the ceramic ones won\'t.I have done 1000 miles so far,my engine compression is low and has not changed in 1000 miles,still waiting!                     Has anyone done a comp. test with these seals,at what mileage.

[Carl]

It is important to use new rotor housings on these seals in order for them to bed in properly.
That way you get good compression after around 2000 miles of running in.
The compression should go up to at least 7 bar on 1 piece seals.
The 2 piece should see at least 8 bar.
I have received some correspondance today Tim, your new housings are on their way.

kind regards
Carl

[spanner]

G\'day Tim & Carl,

I\'m a good friend of Mack, in Trinidad. He spoke a lot about you two guys and Carl, I saw the side draught carbs he got from you as well. Tim,  Mac has the Rx3 he bought from you down here now. Its got a little touching up to do but all in all, its a very original car. I will take a couple pics and send you both later on.
     Till then take care mates..

Regards
Rana

[Carl]

Hi Rana,
Say Hi to Mac when you next speak to him.
That RX3 used to belong to me before Tim had it.
I hope the carbs come in useful.
Kind regards
Carl

[Timrxmotors]

Can,t wait for my new rotor housings,I want 7 bar compression!Has anyone done a comp test with the Iannetti seals?

[Robertio]

Originally posted by Timrxmotors
Can,t wait for my new rotor housings,I want 7 bar compression!Has anyone done a comp test with the Iannetti seals?

If there was anywhere up here that could do a comp test I\'d get one done (when the car is back together) for comparison for you Tim, but unfortunately there\'s not.  Only person I can think of on here who might have had one done would be Gary.

[Carl]

Hi Robbie,
I take it from our emails a while back that you are going to play with the power for TOTB3?
What are you doing?
Kind regards
Carl;)

[Schtoo]

and even a know nothing fool, but why would it not be possible to make ones own ceramic apex seals if one could find a suitable material to cut them from?

something like this might be a suitable material.

It is kinda tough, kinda ok in high temperature and kinda light.

Kinda cheap too at about US$100 for enough to make at least 6 or seals.

I guess you might need to be kinda careful when cutting it, and you kinda need good quality diamond tools to do anything with it.

Maybe I\'m just a kinda nutter that noone knows how to deal with too...

[Carl]

Hi Schtoo,
Nice to have someone from Japan on here.
you may be right to use these materials.
The high cost comes with the cost of machining the Iannetti ceramic apex seals.
It takes alot of hours to shape and polish them after they have been X rayed for defects.Then in each batch which are quite few in number they actualy test 1 or 2 to destruction.

Tell me something,is there any aftermarket Apex seals made in Japan?

Kind regards
Carl

[Timrxmotors]

I did another compression test today,at 1025 miles,it is lower!When I built phil goriahs engine with 3mm Iannettis it had over 7 bar compression,but that was with new rotor housings.Anyone else with comp. results on Iannetti seals?

[Carl]

So what do you attribute the lower compression too Tim?
It can\'t be the Iannetti\'s since they do not wear very much at all.
Do you think something else is wrong?
I think the new rotor housings will make alot of difference if the seals are still in good nick.
Kind regards
Carl