Ha, I actually measured them bro. Front rotor slots all measured between 2.01-2.04mm. The bad rear rotor had one side with 2.03-2.05 BUT the other side of the rotor measured 2.15-2.18.

No good in my opinion. However, I can not find specs on the wear limits. ONly specs when Apex seal is installed via FSM.

Well, assuming 2mm apex seals are 2mm's ;) .15-.18 is too much slop IMHO

I don't think you should use it. A rotor should be cheap and easy to come by, shit, I have 2 S4 n/a's and one S5/6......... although I'll know in about 12 hours if I'm going to be using them or not. Actually, I'd go for S5 n/a rotors if I need one or both. The suspense is killing me. Leaving for KDR in 7 hours.

BTW Sean, housing went out on Thursday ;) Lemme know when you get them and what you think.

-B

Usually the apex seals vary a little in thickness and hence why the FSM has it using the seals as part of the measurements. Check the seals and see what the dimensions of them are. You'd be surprised and might find a few that measure 2.03mm maybe more if they were exceptionally sloppy.

S5N/A rotors really?? Isn't the compression ratio too high? Shit I can't find any s4 or s5 TII rotors for less then 400.00 a pair. BUT there are a shit load of N/A's out there in great shape for cheap.

I would have to re-tune for sure since I am pushing 15psi. What are you running bro??

BTW thanks for getting the housings out. :icon_tup::icon_tup:

The weight codes that I have seen in numerous engines that I have built have been. A, B, C, D, or E .

Your rotors are marked C and D. The other markings on the rotors serve for different purposes, like side seal gap.

Yeah, the comp is 9.7:1 in the S5 n/a's. Supposedly helps out with cruise and low end grunt. Need to accomadate in the tuning though. Doesn't really help or hurt in the top end with the boost that I plan to run. Not to mention Chadwick has been doing it for a while so I feel confident.

Re-tuning is going to be mandatory regardless of whether you change anything. You're going to have a much healthier engine at the end which will mean that things are tighter and she'll probably run leaner anyway.

The S4 n/a's are 9.4:1.
S4 TII - 8.5:1
S5 TII - 9.0:1

No worries on the housings. I feel bad that they were a day late. Please PM me when you get them though.

-B

That is crazy. I mean it makes sense but is such a "no no". I would most likely go with S4 N/A since it is a lower comp ratio then the S5. Then I am in need of rear and front matching counter weights too if I go that route.

The last time I researched on using N/A rotors with 15psi, it was looked at like major SIN. I know Aaron cake is running 12 psi on his N/A turbo application with no problems yet..

Hmmm....interesting. If Lucky 7 can't find me a S4 TII rotor OR give me a good price on a pair he has I MIGHT just go this route.

Well, here's the thing, timing makes power, not fuel. The oversimplification is less comp, less heat, more timing more power......... safely.

I have a front S4 counterweight if you want to take this route. Overall power between the rotors can be viewed as negligable. The real advantage is in the low end and vac runnings.

So Kevin Landers may have a rotor for me...I have a another on standby BUT would like to buy from kevin.

I have a quick question regarding side seal clearancing: So do you put one end of the side seal all the way against one of the corner seal eyelets and THEN clearance the other end? I feel stupid but I was checking some of my 50 side seals I have that are practically new and could not get the little fucker to stay still while clearancing one end. It would just slide slightly obviously screwing up my measurement.

I use a grinding stone and slowly take it down until it's the proper clearance. I do this with the seal out of the rotor. I measure the clearance by sliding the seal against one of the corner seals and then measure the gap at the other..

FWIW - in speaking with Dave on saturday, he's seen some Mazda reman's that hadn't been started yet that were set to 0 clearance. He generally sets his to 1/2 the Mazda recs or .02mm, something like .001" I think. With that said, that's what I'm going to try this time around.

.02mm is flipin crazy.....I like the word flip'in...but I also like this vodka. :)

You said Laura is goning send you some new seal and SPRINGS? I emailed them on friday and haven't heard if they got any racing ones in stock yet. They must. I will call tomorrow as soon as I finishing fucking this goose.....Grey Goose that is.

Goose is my favorite. Nice choice. I recently had some TX Vodka that was like 120 proof.... ridiculous.... expecially the things that it allowed me to do :rofl:

Yeah, they had like 4 sets left. Best thing to do is call. Laura's great to deal with and if you can't get her on the phone, leave a msg, she actually calls back.

GL man :icon_tup:

I feel you on the 120 proof. Now if I could only get my wife to drink that, then the possibilities are endless;)

Purchased a rotor from Kevin Landers today, so that will be in next week.

All I have left is: to get my short block seal kit, oil control rings, side seals and some racing springs from RA. BDC is done porting my rear iron and should be recieving my intermediate and front from Japan2La soon.

Should be able to wrap all that stuff up next paycheck.

I just sent out my first mortgage check today.......good feeling granted the amount of ink I had to lay down on the "dollar" section of the check. :)

Lets hope I can get this stacked before August

:rofl::rofl::rofl::rofl:

Purchased a rotor from Kevin Landers today, so that will be in next week.

All I have left is: to get my short block seal kit, oil control rings, side seals and some racing springs from RA. BDC is done porting my rear iron and should be recieving my intermediate and front from Japan2La soon.

Should be able to wrap all that stuff up next paycheck.

I just sent out my first mortgage check today.......good feeling granted the amount of ink I had to lay down on the "dollar" section of the check. :)

Lets hope I can get this stacked before August[/QUOTE]

August! It's a shame you live so far away Sean, I'd beat your ass if I could ;) Then I'd help out with those flipp'in clearances and get you back on the road before mid July....... You don't happen to have a really big truck with a car transport and a longing to visit the East Coast do you?

Haha, family first you silly fuck. :) I am moving as fast as I can BUT for now I am chilling on vacation sip'in on a cold beer. Laura called me back and sent me some racing springs so I am almost there.

BTW, Halomar or just Petro???