Marks RX7 - lets break a rotary.

[Mark Davis]

How much quicker can you do it in a sequential?

I’ll just leave that there..

One day Mr Bond, one day.

 

[andybond]

For context 5.5 is the current quickest 13B powered FD in the country and that car run 26psi. I’m at 14.5psi, imagine mine at 2bar.

As long as you can get the power down you are going to be golden!

 

[Mark Davis]

As long as you can get the power down you are going to be golden!

The traction control in the Syvecs is very impressive.

 

[Steve Swan]

imagine mine at 2bar.

Abandon hope, all ye who enter here. It really is quite mental as it is, can you sneak up in stages or is that major meddling

 

[Mark Davis]

Abandon hope, all ye who enter here. It really is quite mental as it is, can you sneak up in stages or is that major meddling

Yes we have multiple cal switches with the rotary dials. Before I can run more boost I need to solve the water meth issues once and for all. That’s next on the list.

 

[Adey]

Will it actually be quicker with a shift? You'll be adding a break in the power delivery. Looking forward to the upcoming vids, good luck

 

[Mark Davis]

Will it actually be quicker with a shift? You'll be adding a break in the power delivery. Looking forward to the upcoming vids, good luck

That’s what I’ll soon find out. If not we can enable flat shift next.

 

[cossie1]

I think with 2.0bar you might end up with the same result as the TC will take over and dull the power, but we need a video to see

Infact we need LOTS more videos

 

[Mark Davis]

I think with 2.0bar you might end up with the same result as the TC will take over and dull the power, but we need a video to see

Infact we need LOTS more videos

After this little experiment we can turn the TC off and hope the 888s can grip.

 

[Mark Davis]

0.6s for 2nd to 3rd shift…….

Flat shift enabled

 

[Andyquadra]

0.6s for 2nd to 3rd shift…….

Flat shift enabled

 

[Mark Davis]

The Aquamist water meth set up has just not worked for me so decided to rip up and start again replacing with Pro Meth products which is what I should have done from the start, just at the time Prometh didn’t have the jets I needed, turns out they do now.

I’m aware that Aqua tec manufacture the pumps and the likes of Devils Own, Pro Meth and Aquamist put their branding on but I decided to go up in pump size to help get the flow. Pump is currently with Matt at LMW having the correct loom plug added.



Next up I’ve placed an order with Pro Meth for a very similar set up to this but with braided PTFE lines to deal with the methanol.



It turns out the 1600cc Aquamist solenoids are basic £15 welder solenoids that they sell for over £100 each. These will be the only elements I keep as they are proven to do the job.



Next up I pulled all the lines off the water meth system as kept getting build up in the jets reducing flow - still not entirely sure where the debris has come from but upon inspecting the tank you can see it’s full of debris, next step is to clean all lines and tank so before refitting.

Waiting game now to get the new Prometh jets, lines and fittings. Will likely need a new feed line too and a slight amendment to wiring loom to extend water meth pressure sensor.

In other news my snazzy 75mm billet compressor wheel was ever so slightly fouling the inside of the compressor housing, I think it just needed a few thou taking out for clearance.



Before


After


Due to having a baffled sexual billet Winchester sump I was over filling engine oil so removed a decent chunk yesterday as suggested by engine builder to run just over the half way point on the dipstick. I was filling catch can too regularly for my liking, this should solve it.



When I have all the bits for the water meth bits plan is to book in with engine builder to have diff brace and gearbox brace fitted as well as some new brackets etc.

In the meantime when I get some time I’m still keen to try and test Dragy 100-200kph with new shifter, I think there’s potential to drop a few tenths at 1bar.

 

[Mark Davis]

Since all of the above has happened my clutch master cylinder looks to have failed.

The master and slave look ancient so I’ve placed an order for both. Will hopefully be here this week.

 

[Adey]

easy to fit with everything in place or is it an engine and box out job?

 

[Duncan Grier]

One step back 2 steps forward, hopefully easy replacement

 

[Mark Davis]

easy to fit with everything in place or is it an engine and box out job?

Yeah nice and easy. 1 hr job with my old man back

 

[Mark Davis]

One step back 2 steps forward, hopefully easy replacement

Just nice to not have engine issues

 

[cossie1]

Just nice to not have engine issues

You just jinxed that

 

[Mark Davis]

My clutch master looked to be failing so swapped for a new one.

Before.


After


I also ordered a new slave but waiting for that to arrive.

Also fitted the new Prometh pump but again waiting for the rest of the parts which should arrive any day now. Kit includes jets, lines and manifolds.



Treated myself to some FEED carbon side steps too. I’m going to source rear diffuser and new BGW for the winter.

 

[Mark Davis]

In this weeks adventures of Marks FD I’ve now further bled the clutch again and also taken delivery of a new slave cylinder along with new Goodridge line. Will fit this weekend.



The Pro Meth bits have arrived, have sent inlet off today so he can make a few amendments in order to fit the jets and 4 port manifold.




I’m taking this opportunity to clean up the engine bay following me losing all that coolant a few months back. Also better routing the loom to make it tidier. Photo is a work in progress



The 1bar tune is looking good. Just need to safely double the boost.