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Discussion Starter · #1,341 ·
Well checked everything, and im gonna take a punt on worn valve seat on mac soleniod.
Intake to turbo clean so no debris in valve..
All wiring good..
Now admission on my part mac soleniod was pinched of my rx7 so years old...
X10 zoom of seat...


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Discussion Starter · #1,343 ·
And 2 tyres 1 a lock up and 1 inside front rh tyre.
Thruxton is very hard on tyres.
With my extra boost i was easily able to sit on bumper of my mates bmw. Thought about passing on 2 occasions but i knew hed shut the door.


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Banish a little rust a day people
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Well I did type a reply days ago but apparently it didnt send.

Sooooo time for more power then?

A larger turbo that has a little more top end and some careful boost control to keep below 220-240ftlbs will see you to a good bit more power that should still be safe for the stock rods?
 

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What boost should it be running at?
I suppose if you had an issue, removed a part of the system (Mac valve) and now the issue is gone, you’ve found the source of the problem.
However if the wastegate spring is weakened, you might be only noticing creep at higher pressures.
Could you plumb in a manual valve to test the wastegate?
 

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I want to suck at the bosum of more power...goddammit...
Cars was more awesome.


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I already feel the same about more power, but I’m only at 210bhp, so I have more to go before I worry about rods.
I have priced up parts for a bottom end build to get to 300bhp, but have no idea about machine shop prices, honing/boring balancing crank etc. any ideas on this cost?
 

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Discussion Starter · #1,349 ·
New gen Mac solenoid arrived yesterday. Ill fit tomoz. Mapped for 0.85ish bar so nearly 1.2 prob a 30 to 40 bhp hike.. at 226ft/lb defo rod territory.
Rods dampner and oil pump build plus bearings and gaskets knocking on door off 1500.
Bassest down quoted me a new fully forged build at 4500. Ready to drop in.
I got to keep it real, i wanna drive it and have fun, not spend my days off working on it, had that withmy westfield. Ended up hating that car so...were staying put . Its fast enough.

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Rods dampner and oil pump build plus bearings and gaskets knocking on door off 1500.
might have a set of B6t / 323turbo rods and pistons ;)


mx5 conrod/piston top for comparison.

B6t pistons are different to the B6ze(rs) Mx5 type, lower compression and different alloy etc. designed for turbo pressures....

Rich.
 

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Discussion Starter · #1,353 ·
Mac soleniod duly fitted yesterday. Due to no tax no mot or ins cant test it.
So waiting for a run up check on unit 3s rollers. No real hurry no trackdays booked poss that its for me anyway for this year. Need x4 tyres and another day will be x8...


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Discussion Starter · #1,355 ·
Yep my actuator is fubar. Leaking air. Maybe alignment issue when i clocked the turbo. strange with nipple facing manifold perfect...
Maybe garrett but still made in china...


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Banish a little rust a day people
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New gen Mac solenoid arrived yesterday. Ill fit tomoz. Mapped for 0.85ish bar so nearly 1.2 prob a 30 to 40 bhp hike.. at 226ft/lb defo rod territory.
Rods dampner and oil pump build plus bearings and gaskets knocking on door off 1500.
Bassest down quoted me a new fully forged build at 4500. Ready to drop in.
I got to keep it real, i wanna drive it and have fun, not spend my days off working on it, had that withmy westfield. Ended up hating that car so...were staying put . Its fast enough.

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Depends how far you want to go. Oil pump isn't super needed IMO, the issue is revs and vibrations causing the gears to crack, better to solve the issue itself with a crank damper (although pump might be cheaper given prices of the dampers recently). Gaskets will add a chunk to the cost tbf. One of those things isn't it, once you open it up to do rods and inspect things there will likely be things worth replacing.
 

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Discussion Starter · #1,358 ·
Yep and then onto next weak leak. 5 speed onto 6 speed...with a 6 speed ill need a 3.9 ...it goes on and on.
In all fairness im slightly insane and lack of forge build i make up for in bravery on track. There really isnt much that overtakes me on track. Everynow and then a faster car/ driver catches me and i move over. Battling with mates is fun too, if i just drove off into distance dont think it would be as much fun. I know my car is faster than my mates bmw as together we do a 1.30 round Thruxton on my own 1.27 but its fun. Ill stay as i am as im skint from holiday too lol. Usa very expensive, the bills are rolling in...
Looks like im gonna get a forge/billet actuator as std failed and expensive, may as well upgrade.

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