scott87

mr20c has a really in depth buying guide

This car is now up for sale. I will be making a proper for sale thread for her later today. The car now however is in need of a bumper respray as whilst i was away someone has obviously dinged it very lightly and put those little hairline cracks in it. She also needs a new head gasket, as it is using oil and the compression is down, however this is an ideal time to fit the tt headgasket allowing you to have that little more boost. Anyway if anyone reads this before the sale add goes up then message me

Well its finished and all mapped up. Modified the acis valve so it no longer functions which has stopped the weird noises through the knockbox at high rpm. Clutch is holding really well par the horrible noise pulling from first but im just going to live with it as daily driving is lovely. The wastegate wouldnt quite hold the boost low enough so i fitted a restrictor ring which is holding the boost perfectly. Lyndon also put a fuel cut in place should the boost decide to spike. A new wastegate is on the list of things to do but at the moment this work around is perfect. I know have a horrible vibrating exhaust as it has shifted allowing the downpipe to touch the bulkhead so i need to have this modified or a flexi fitted. Other than these couple of niggles the car is amazing. Pulls like an absolute train and my jspec dials can no longer keep up at all. Ill get a vid up when i can and also one of me and a carrera 2 having a play, which he lost Absolutely would recommend Lyndon to anyone that needs their car mapping. The man is a genius!

I agree the right colour and fitted properly it could look better. It's angled down which looks odd. Plus the supra doesnt have a spoiler so looks stupid already

That is the plan. But the cost is an issue so wont be for a few months as had a fair amount of small niggles to sort that mounted up to a lot. So if i can get a restrictor ring to reign in the boost the map can be tweaked and that will be that done. Then when i get a new wastegate i can just bolt it on and go.

The bottom port is open. The one on te side has a feed from the compressor housing.

I do already but the car is still trying to boost more and getting up to around 10psi. I've stripped the wastegate and rebuilt and that is all fine, so the next option is to restrict the exiting exhaust gas.

Dam I will have to work something else out then. I will see if a garage will let me use a pillar drill for half hour or something and then i can file everything down at home.

No i dont. Worse thing is it was two different people!

I bought some sheet steel. But... Someone borrowed by angle grinder, never gave it back, same with my drill. So it would be an expensive job buying everything.

Do you have access to the tool for cutting one for me yet? Then i will hope that i dont have to file it too much!

Hmm I have no idea what size to try though. I guess i could just buy the smallest size that you mentioned before and see how that effects boost. Then it will be easier to make an educated guess as to what size i need (if it needs altering further) - - - Updated - - - Hmm I have no idea what size to try though. I guess i could just buy the smallest size that you mentioned before and see how that effects boost. Then it will be easier to make an educated guess as to what size i need (if it needs altering further)

Because im trying to hold boost at 0.6bar as its an na-t.

Could someone with the tools required please make me a restrictor ring. Ideally i need a few as im not quite sure which size i will need. I am going to place it in the 3" downpipe. So ideally i would like the interior diameter to start at say 1.75" going up to 2.5" in increases of 2 or 4mm. If someone can help that would be great.

My downpipe has 3 ports. 2 are blanked off and one has a lambda sensor in. I have deleted one of the lambda sensors as running a piggyback and am not running a wideband.

On that logic, route the return to a catch can and stop every fifty feet and refill the engine from the catch can.....

Brill thanks Also would it be worth fitting a cooler to my w58 to help that?

The person running the garret on the car, told me services parts are cheaper. Also the actual unit itself is cheaper in total. I would imagine a huge litred truck engine would create a shed tone of heat through the turbo too? All i can say is that i know a setup running one and its a bombproof. But im sure a huge amount of time went into the turbo choice still. Even with it being a truck one.

The argument of the turbos being designed for low boost is accurate but that is low boost across a very large many piston engine. When you use higher boost but far less pistons and engine size, the running tolerances of the turbo are easily met. You also then benefit from running a garret unit that is far cheaper to service and repair as apposed to its petrol designed counterparts.

I know of a Supra in the uk running a truck garret and its an immense and reliable car!

Could anyone please point me in the direction of a template for a 3" exhaust gasket template. Im making a restrictor ring and would prefer to not have to remove the gasket that is on the car. I have a 3" downpipe to a 3" 2nd decat, it is the standard supra 2 bolt one.

As im now running a single conversion i was wondering what are the best fluids to use. I currently am using the oem recommended fluids in the gearbox, diff and the engine (10w40). However i was wondering as the engine and gearbox are going to be under more stress should the rating of the oils be changed at all?

Driving is amazing. Pulling away not so much. But it's lighter than my oem clutch was.

Sorry yer. I put na meaning 2jzge sorry. But yes I am single turbo. Either way been out today and put a dam site more revs when pulling away and seems much better. Around 2k to pull away. I'm still getting the slight noise I spoke to rich about but I believe this to be much more vibration related rather than clutch now. But overall I still love the clutch. Just one hell of a driving learning curve.

He very kindly offered. But the laser cutter (I think it's called) has packed in and being Italian parts are roaming the wild waiting to be found.