SChema

Can I block off the Pulsation Dampener?
Without affecting the car at all?

HAILERS

pulsation dampener installation norcal 2nd Generation Specific (1986-92) 0 07-23-04 04:41 PM
Pulsation Dampener RX7Boy06 2nd Generation Specific (1986-92) 10 01-31-04 02:26 PM
FPR and pulsation dampener question Heath 3rd Generation Specific (1993-2002) 2 03-20-03 05:46 PM
Banjo Bolt? pulsation dampener ? TriTurboGen3 RX-7 2nd Generation Specific (1986-92) 12 12-10-02 11:30 PM
Fuel pulsation dampener question Heath Single Turbo RX-7's 1 12-10-02 07:55 PM


I saw those posts at the bottom of the page when I logged on to your thread. There are two distinct views on that, and I think they are expressed in those threads. You might have read them....might not have. IF you have not, you might read them while awaiting an answer to your question.

I wouldn't think about running without mine.......unless I was in the boonies and it gave out and I had the parts to install a work around to get back home.

Whizbang

search. seriously. so much about that....

SChema

I looked at the Marren PD, some of the people said there will be retrofitting, what kind of retro fitting are we talking about? Some talked about using a FPR, where would I hook that up to? My existing PD is leaking and I may end up buying the Marren PD. I'm just interested in the FPR idea too. I would have to block off the existing PD if I go the FPR route right?

SChema

I went to Mazda and they have discontinued the OEM PD's, the last one they sold was around $175. I was wondering which is the easiest and cheapest way to go without sacrificing integrity?

jhammons01

I got quoted the same price at Mazda. Looking for a substitute.

Wizz

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/new-part-pd-392559/

jhammons01

Ok Wizz, I was part of that thread......what was the point?? Autocross and get a discount?? Buy the maren PD like YearsofDecays' picture shows???

capn

im doing the Marren PD retrofit jsut search for my name in this section and you should find a diagram that i drew that explains my setup

i also started a PD thread that became very controversial

TitosToy

i went on ebay and bought a used fuel rail with the pd for $20. installed it and works perfectly. u can check there and may get lucky.

RETed

Oh no, here we go again...


-Ted

Aaron Cake

iTrader: (1)

There's a thread that has just recently been moved to the archives with an excellant discussion on the pulsation damper. Give it a read, then make your own informed decision.

https://www.rx7club.com/forum/showthread.php?t=395021

SDrotary-FC

there are 213 left in the country i can get them for $120 SHIPPED if you need one

floppyhat69

I have ran my 88 convertible for years without a PD with no problems at all. When I had my 91 coupe I replaced the PD on it with one from a 85-91 Mazda MX-6 they are the exact part number and also cost much less at the dealer since they are for the MX-6

Wizz

The point was for FC3STruboII13B, the old part# was discontinued and replaced with a new one.

I might take you up on that.

capn

YES!!!!!!!! i got my Thread ARchived WHOOOOOOOOOOOOOOOOOOOOAA

i thought you mods took a shining to that thread


and thats the controversial thread i was talking about LOTS of good info

SnowmanSteiner

I honestly suggest you read up on the threads that have been started on this. There are two differing opinions on the value of the stock and aftermarket pulsation dampers. You'll have to decide for yourself which party you agree with.

- Steiner

SChema

Thanks for the help, kinda helped me in my search.

jhammons01

JJEEEEEZZZ what a thread!!! you have to read "Skeptic of Banjo Bolt/PD Elimination Mod"

https://www.rx7club.com/forum/showth...1&page=1&pp=15

That thread is incredible. Took me almost an hour to get through it all.

capn

im so proud of myself for starting that brings a tear to my eye

YearsOfDecay

all the arguments aside... I had a BAD lean situation a7 3.7k RPM no matter WHAT is did to the fuel curves or fuel pressure when i was running SS lines and no PD.... Put the PD on and it went away.... i had to take fuel OUT in most areas of the fuel maps after putting it in.....

I'm sold that the PD performs a necessary function.... removing it might not have adverse effects on some cars that haven't been modified.... but the datalogs with the wideband didn't lie... it would go from 11.75 at 3500 RPM to 14.9 at 3750 RPM and then back to 11.5 after 4K RPM.... and it didn't matter how high the pressure was or how high I jacked up the fuel map in that range.... under boost it caused detonation, under vac, it stuttered and hitched...

Put the PD on and that blammo.. no fluctuations in the A/F's (well... it went dog rich from 3.5 to 4K untill i took the fuel out that i had been dumping in to compensate for the lean condition...)

old rubber fuel lines can also act as a pulsation damper by the flexing of the line itself under pressure, i think this is why some guys get away with it....

jhammons01

That should be added to that other thread. This is very important data. I heard abou the rubber lines bulging as well.

capn

TATs HAWT!!!1 are those the stock fuel rails just painted? or anodized for real? and i see your using the marren PD i cant wait to get mine