Louis Moralez

 

A full bridgeport on the Renesis is possible.

B

 

I admire your fantastic work Brian, but IMO that doesn't qualify as "full" relative to the earlier 13Bs. It's fairly small in comparison.

 

Well it's "full" in as much as the four main intake ports are bridgeported. It doesn't necessarily have to have huge cuts for it to be a full bridge. Yeah, the secondary bridges are small and yeah, we can't do a wider bridgeport cut much really but I still think it will be greatly beneficial to the motor (even in NA street form) perhaps because the overlap degree this thing yields isn't a big huge amount like on the older motors. That's my take at least on it.

B

 

I notice also the spectacular heavy porting on those irons! No mention on how that will help with flow? Also it looks as if the exhaust duration has been extended quite a bit! Lastly a touch on that intake for greater measures.

 

Does a bridge on the renesis sound as shitty as one on a 13B?

 

You dun like da brap brap?

 

The brap is all but gone as soon as it's tuned. There's just not enough overlap. you can faintly hear it sometimes though if conditions are right.

 

Have you any MAF sensor data yet? There is a chance that the slot for the bridgeport actually REDUCES intake mass airflow when one considers the effects of intake velocity and the right-angle turn the intake charge must make.

 

lol! Maybe its old age setting in or I have been listening to it for 12 years.

I will say that on most of the 13B bridges we have done, after about 6 months the customers wish they would have just gone with a street port. The noise gets old pretty quick.

 

You can thank the side exhaust port for that.

Otherwise, you gots no bridgeport luv for teh APV ports?

 

no aux bridge?

edit HaHa, what ^he said...
can we get to exhaust bridge already... ( yeah i know the heat would warp it...)

 

I could probably get you some info if you wanted it... My problem is that I think my O2 sensor is on it's way out and it's not reading right. we got very weird readings durring some initial tuning, so we just got it into the safe range and left it alone till I can get some stuff replaced.

Needs an O2 sensor, and neutral switch for starters. If this, and the half tune job won't effect the data you're looking for, I could probably log it for you as soon as we have a dry day this week. I'll give you a call later today, and see what I can do for you.

 

I don't know yet, but I suspect that this won't be as much the case with a full bridge (the bridgeport cuts done on the primaries).

B

 

I've done it on two motors. Not convinced doing cuts on those ports is worthwhile or not. Just don't know yet.

B

 

we may have to talk eventually, and sorry for being remiss about not getting down there to see you yet

 

You and me both... +1

 

Brian,
If this motor continues to hold up, I may have you bridge my other block for my secrete project... lol

Also, Mine may lope again once I can get the idle down to like 1000 RPMs, but I have to get my stupid neutral switch replaced. I would already have this thing fixed if it wasn't for buying a house...

 

http://www.rx7club.com/showpost.php?...2&postcount=24

 

That's funny.

 

lol... I've never heard of NA side springs going out "very very very quickly". Sure they get weaker, but he makes it seem like he's replacing his engine like every couple races.

EDIT:
Wait a minute... Eric Meyer... no wonder he's seemed to all but disappear.

Well, I've got over 6000 miles on my block already and no apparent problems so far from the motor itself. I have misc parts going bad, but that's fairly normal for almost 100,000 miles on a daily driven car.

 

His engines are only used for competition, meaning continous WOT and high rpm flogging. When you spend as much as those guys do on prep and support only to lose race after race because the engine blows or goes south then it would be very frustrating for sure.

Your situation is not comparable. For that matter, who's to say that your motor is any better than any other fresh standard Renesis engine? All we know from you is that it "feels good".

And I meant to post that this is probably why he has gone silent here with the link above.

 

Just use better side seal springs...
Meyer motorsport is just one team with one mindset and some experience. Other teams and builders had completely different results and engine lifespans.

 

I don't necessarily disagree

 

eric is a perfectionist and he cant stand it when his engine goes down on power by 10hp or so. he needs every hp he can get to remain competitive.

Has anyone seen any flattening of the corner seal springs? I am starting to hear a little about that. IDK if it is a real problem for a lot of folks, or if it is an isolated happening.