16V Valves....
10-10-2015, 07:22 AM
Post: #11
16V Valves....
(10-10-2015 02:52 AM)harkes Wrote:  So realistically there could be a whole 1-2 hp in choosing the right valves Wink

Larger valves may be quite a different story.

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01-14-2018, 05:43 PM
Post: #12
16V Valves....
I just disassemble my ported smallport head. I bought it long time ago really cheap, now I know why Banging head

The inlet valves are pretty much as new, nice and shiny. But the exhaust valves are worn out and the edges are sharp, because they are grinded down.

If I fit 7MGTE valves, will these require bigger seats?

Project AE86 now begun.

Cars I have owned:
Toyota Starlet EP91 1,3 16v Turbo, 200hp
Toyota Starlet EP71 1,3 12v Sport
Mercedes 207D camper, 1977.
Toyota Starlet EP70 with a 174hp Silvertop 20v See video here:
http://videos.streetfire.net/search/Star...079edc.htm
Toyota Corolla AE101 with a 164hp Silvertop 20v. (Evolution bodykit and candycolor paint).
Volvo 240 2,1 (The only car I have maked money on).
Toyota Corolla EE90 (my first car)
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01-18-2018, 09:31 PM
Post: #13
16V Valves....
(01-14-2018 05:43 PM)Jimmi The Kid Wrote:  I just disassemble my ported smallport head. I bought it long time ago really cheap, now I know why Banging head

The inlet valves are pretty much as new, nice and shiny. But the exhaust valves are worn out and the edges are sharp, because they are grinded down.

If I fit 7MGTE valves, will these require bigger seats?

To know for sure.... check with a machine shop.

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
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09-22-2022, 10:31 AM
Post: #14
16V Valves....
Hi is there any bigger valves aveilible no more that "fit" stock seats. atlantic size is quite big to hi power turbo use. MRP had 0.5mm bigger stainless but not aveilible no more. Have been looking options.
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Yesterday, 10:00 PM
Post: #15
16V Valves....
(09-22-2022 10:31 AM)corolla4agze Wrote:  Hi is there any bigger valves aveilible no more that "fit" stock seats. atlantic size is quite big to hi power turbo use. MRP had 0.5mm bigger stainless but not aveilible no more. Have been looking options.
16V valves.....
largest you can fit on a stock seat is 31mm intake, and 26mm exhaust. Any larger - especially on the exhaust side could prove to be an issue... if the exhaust seat gets too thin, the seat could possible fall out Crying

As far as getting those sizes... Google search custom motorcycle valves


hope this helps......

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
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Today, 01:20 PM
Post: #16
16V Valves....
whit turbo engine the exhaust is weak point. Need look up some shops if just swap the "atlantic" size valves and seats. intake side will flow whit Boost, the ex is not that good

there is lot option in "atlantic" size on valves but the seat install is not cheap here near me.
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