AdamB

If you have too much tip protruding into the bottom of the bucket its going to put your valve clearances out will it not? Hence why I said it will have to be the correct length or you'll end up machining buckets as well as stems.

Yeah thats what I mean lol. Habbits sake, so many names for these things I just stick with the one Are you still trying to find a valve thats going to drop in without the stem needing cut down?

It will have to be the correct length mate or your going to get into a right pickle when it comes to fitting the hydraulic followers. The measurement you need is called the "tip length"

Those ones from ebay must be custom made for that company, because Supertech don't list valves in that size mate.

Those plug and play ecu's like to run at stock pressure. Set it back to 2.3 bar.

bump

It's not just ECC that have used them before, guys over in Malta have used them and a couple other people that were over on TGTT many years ago,

Basically put an eye bolt in where the rear seat belt buckle is and attatch the harness Not the best/safest way of doing it though, really need a harness bar.

The Evo is the closest match because its been used and modified before

Second that mate, 140 or lower is rebuild time from what I've read in the manual. Think of all that torque you'll be losing, it will just be escaping into the crankcase lol.

What brand? Whats your spec? Just set it to stock pressure 2.3 bar unless your running some more boost.

You can probably pretty much guarentee that you won't find a valve with the correct stem length and stem diameter to fit without modifying it in some way that's for sure. Sorry to dissapoint but the 20v 4age won't fit, the stem diameter is too thin 4.97mm I believe. The 16v will fit though except stem length. The 4age 2mm oversized (27.5mm) come in at like £90 for Supertech ones. You would be mad to go with stock valves for that price. Supra 7MGTE are the same except stem length but that makes no difference because which ever way you choose it will need machining.

I do one plug at a time but makes no real difference. You should do it with the throttle wide open, but all it does is reduce the cylinder pressures. Don't know how you managed to get 150 with the throttle closed because thats about the average of a well worn engine. I believe they are normally around 80-90 with the throttle closed.

The problem is can you outlay the cost of one and possibly having butchered one? I believe they fit the floor close enough, maybe one of the bolt holes just needs elongating slightly. I guess there would be some modification to fit the cables but I can't say 100% as I've never seen one in a Starlet to know what exactly needs doing. If you can get hold of one cheap enough you can always try lay it up in the car and that will give you a better idea of what needs modifying, then if its too much or can't find someone to do it then sell it back on.

Haha you will have to order in quantity batches as well to make it profitable for them but it won't be as expensive as you think for custom stainless or inconel valves. Depends on your budget though, I guess your working to quite a tight one. As you've already said you would need the stem cut to the correct length and collet grooves cut back in. All this could be easily done on a lathe which is roughly around £35-£45 per hour, but remembering there are 8 exhaust valves to get through you may be looking at somewhere in the region of £180 to get a complete set of valves done. By the time you

Haha, I could send the design off to supertech and get some custom made ones but would need to be sure that they fit the cylinder head without interupting the inlet valves. Nah I use Catia

This is what you need mate 93.3mm stem length, Stem Diameter 5.97mm undercut 5mm, 27.5mm head diameter No collet locks cut because I don't know the dimensions for them haha. Yeah Dbilas aren't as well recognized as SuperTech though, SuperTech are right up there with Ferrea.

No idea on that mate. Only one thing to do would be to measure them if you can get hold of a spare valve. Hmm I got different specs to you on the 3SGTE, I got length of 99.5mm stem length, 5.97mm stem diameter and a stock 29mm head diameter. I've got a bit of spare time, I'm just going to design some valves haha

Stock valves are : 93.3mm length 5.97mm diameter

ECC will price it like that because its not a "usual" mode that everyone has done. If we were all rolling round with modified Ikeya shifters they wouldn't be able to charge such a price.

Those ones are custom made by the same place that do their dogboxes. Imo it's a hefty price to pay just for a gimmick tbh, they are only really useful on a dogbox where you can bang them into gear without the fear of destroying the synchro's.

That's good to hear mate! They are annoying you still have to clutch on the way up, but on the downshifts they are quality (if you can heel and toe).

Phil those ones listed are what Abbott runs, they were designed by PEC but manufactured by SuperTech. These ones here buddy Inlet: http://www.performanceenginecomponents.com/products/product.asp?id=251246 Exhaust: http://www.performanceenginecomponents.com/products/product.asp?id=251245 As you can see they are only 1mm oversized, this takes the exhaust-inlet valve ratio up to 88% which is better but still not perfect imo. I'm sure the lads at Zisco do 1.5mm oversized which will go to 89.8 % and with 2mm oversize you get 91.5 %. The 7MGTE valves are: Intake - 32mm Exhaust -

Contact Keith at Zisco as well mate, I'm sure he knows of a couple of the lads over in Malta that run the Ikeya Evo shifter in a Starlet as I'm sure i've spoken to him about them before. My mate runs one in his Evo and it's good but does get a bit tedious, I probably wouldn't advise using one if its your daily car.

This is exactly it, off the top of my head I believe the inlet valves are 29.5mm and exhaust valves are 25mm, giving a size percentage of 84.7%. This is way too low and for a turbo motor the percentage should be around the 93% mark. I worked out you would need roughly 2mm oversized exhaust valves to get close to this figure.