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Anyone know the specs on the old trw 2293 piston?

Posted By: Glen440

Anyone know the specs on the old trw 2293 piston? - 07/01/10 01:19 AM

I have a 383 with the .030 trw 2293 domes. I'm curious what the dome cc is.

This engine was built way back in 1980, heads are 906's with double springs and aluminum retainers. Some weird rod bolts with a locking style nut. It has main studs and head studs with a 7 quart pan and HV oil pump. There is no cam in it so no idea what was in it

Thanks
Posted By: Chris2581

Re: Anyone know the specs on the old trw 2293 piston? - 07/01/10 01:23 AM

I "think" it's 12cc's IIRC.I have the same slugs in my old 383.It's been a long time since we bought those pistons.
Posted By: Glen440

Re: Anyone know the specs on the old trw 2293 piston? - 07/01/10 01:31 AM

I have been coming up with all different answers searching the web, people saying they are 11.5-1 with 88cc heads which would make the dome huge.
Posted By: Black_Bee

Re: Anyone know the specs on the old trw 2293 piston? - 07/01/10 04:28 AM

Quote:

I have been coming up with all different answers searching the web, people saying they are 11.5-1 with 88cc heads which would make the dome huge.



I have those pisrtons in my 383... The spec from TRW is 22cc.

Hope this helps!
Posted By: Glen440

Re: Anyone know the specs on the old trw 2293 piston? - 07/01/10 01:19 PM

Maybe a better question is how much cylinder pressure do people have with these?

I'm trying to decide on what head gasket to use, there is a huge difference between 12 and 22 cc.
Posted By: Black_Bee

Re: Anyone know the specs on the old trw 2293 piston? - 07/02/10 03:33 PM

Its been years since I built my engine, but I'm pretty sure I ended up with 11.3:1 with the pistons .005 in the hole and 88cc edelbrock heads.

I have a small solid cam (232/242) in the engine and it was pushing 195ish psi if I remember correct.

Hope this helps.
Posted By: RemCharger

Re: Anyone know the specs on the old trw 2293 piston? - 07/02/10 06:24 PM

Quote:

Maybe a better question is how much cylinder pressure do people have with these?

I'm trying to decide on what head gasket to use, there is a huge difference between 12 and 22 cc.

What gas are you trying to use?
Mine; .045 in the hole, 1009 gasket, w/82 cc 906s, wouldn't come close to running ok on pump gas even with the timing turned way down. I run C12 , and now have 75cc aluminum -1's on it. Don't know for sure what the compression is, but it ran 130 mph in a 2900# + 67 cuda.

Rem
Posted By: John_Kunkel

Re: Anyone know the specs on the old trw 2293 piston? - 07/02/10 07:56 PM

Quote:

The spec from TRW is 22cc.



That's right from the book, 22.3 cc effective dome for the .030" oversized piston, a little less for the .060" over.
Posted By: Black_Bee

Re: Anyone know the specs on the old trw 2293 piston? - 07/03/10 09:41 PM

Quote:

Its been years since I built my engine, but I'm pretty sure I ended up with 11.3:1 with the pistons .005 in the hole and 88cc edelbrock heads.

I have a small solid cam (232/242) in the engine and it was pushing 195ish psi if I remember correct.

Hope this helps.



My engine runs fine on 92... When I ran iron 906s it pinged all the time.
Posted By: dOc !

Re: Anyone know the specs on the old trw 2293 piston? - 07/03/10 10:07 PM

Let me add ....

I am going to use these pistons in a decked block with the 019 gasket and stock-type 452 heads IN a boat ....so it will not be "loaded" as tight as in a automotive application.

I think I will be able to get-away with pump-premium .. 93 octane.
Posted By: Glen440

Re: Anyone know the specs on the old trw 2293 piston? - 07/04/10 09:09 PM

Thanks everyone

I'm trying to figure out what exactly I'm gonna do with this engine. I have a 440 block getting machined at the moment. My duster needs an engine with the 511 being pretty smashed up. Gonna go back to having fun before I revisit the B1 engine.

If the 383 would run high 10's in a light A body back half car I would put it in it.
Posted By: 9SecRoadRunner

Re: Anyone know the specs on the old trw 2293 piston? - 07/04/10 09:42 PM

my brothers duster has those pistons +.060, 590 MP cam, ported 452 heads, all steel car , working windows, factory wiring , lights and heater box etc still in car...runs 10.70's @ 125

Attached picture 6068788-Dennysdustertruck005.jpg
Posted By: dOc !

Re: Anyone know the specs on the old trw 2293 piston? - 07/05/10 12:29 AM

Did you have to fly-cut the pistons with the 590 ? ... if so - how much? .....and where did those pistons come-up .. on the deck?
Posted By: RemCharger

Re: Anyone know the specs on the old trw 2293 piston? - 07/05/10 03:44 PM

Quote:

Did you have to fly-cut the pistons with the 590 ? ... if so - how much? .....and where did those pistons come-up .. on the deck?

I didn't on mine. .585 comp,275 at .050, amd 1.6 intakes, but they are tight. Around .070 on the exhaust....
Posted By: Glen440

Re: Anyone know the specs on the old trw 2293 piston? - 07/05/10 11:12 PM

Quote:

my brothers duster has those pistons +.060, 590 MP cam, ported 452 heads, all steel car , working windows, factory wiring , lights and heater box etc still in car...runs 10.70's @ 125




Thats impressive.
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