North American Turbocoupe Organization



Sealed Power Pistons (long sorry)
DennySweet Offline
Member
#1
How does the members on this board feel about Sealed Power Forged piston? I am trying to find an alternative choice for our street driven turbo cars. I have ran Wisco pistons before and for the price I would just as soon use SealedPower(TRW). I beleive these are what was stock in these cars. Anyhow the sales rep. at Rock Auto is selling this forged Sealed Power piston for 117.50 a set shipped! Only ones available now are .020 oversize. However Sealed Power is setting up to run another batch of these in December. Then .020/.030/.040 will be available. Yes I know there is a weight difference in the SP vs Wisco,Aries,Venolia's but having the lower balanced should make them as reliable as the factory. Give me some feedback Guys. Denny

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88TC,87TC,88Mustang Conv,86S-10,82Toyota 4WD,2-88S-10Blazers.91 T-Bird
88TC,87TC,,86S-10,82Toyota 4WD,3-88S-10Blazers.
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Pete D Offline
Administrator
#2
Denny, I'm running TRW .020 overs in mine. Unless you plan on spending a lot of time above 7 or 8 K rpms I don't think a few grams will make much difference. PS, I'll take a set at $117 + shipping - hint hint.

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88 TC X 2, 86 SVO, Main TC with K&N, 3"DP to 2.5"duals through Dynamax, Ric valve at 17+ and disconnected KS.
Elite Bodega 16" chrome wheels. Autometer pod w/ A/F and Vac/boost gauges.140 mph Motorsports Speedo New engine: Total Seal rings and TRW pistons, ported and polished head w/ cc'd chambers,1.59"exhausts, SS valves, gutted upper, knife edged lower, A-230 cam, Race Engineering Adj Cam Sprocket, Crowlers, ARP head studs, and rod bolts. Walbro 255 HP pump and Kirban adj FPR, T-3. Centerforce II, KB subs and jack rails.
Pete Dunham


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1987tc Offline
Senior Member
#3
Make sure they are FORGED pistons and have the dish!
Are they part numberL2500f (50mm if they are .030 over)
Wes

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1987 TC:
Hurst compition plus shifter,K&N cone,roller cam,custom single exhaust,Gillis valve,H&R springs,KYB shocks,struts and quads.
3.73 rear.
Tubular rear control arms and Kenny Brown trac kit brackets.Mac rear differntial cover and girdle. soon to come, Installation of Caster camber plates and a custom built roll cage.
Wes Arnett
Linton Indiana
Sold my Turbocoupe. It went to a good home.
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1987tc Offline
Senior Member
#4
I just went to their website and it does show the L2500f piston but only in std bore.
Not many of these engines will be std bore when rebuilt. If the cyls are good enough that they don't need bored then you probably don't need new pistons.
Wes

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1987 TC:
Hurst compition plus shifter,K&N cone,roller cam,custom single exhaust,Gillis valve,H&R springs,KYB shocks,struts and quads.
3.73 rear.
Tubular rear control arms and Kenny Brown trac kit brackets.Mac rear differntial cover and girdle. soon to come, Installation of Caster camber plates and a custom built roll cage.
Wes Arnett
Linton Indiana
Sold my Turbocoupe. It went to a good home.
Reply

Pete D Offline
Administrator
#5
I'm with Wes. If you don't need an overbore and the stock pistons are in good shape, reuse them as they can take a ton of HP.

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88 TC X 2, 86 SVO, Main TC with K&N, 3"DP to 2.5"duals through Dynamax, Ric valve at 17+ and disconnected KS.
Elite Bodega 16" chrome wheels. Autometer pod w/ A/F and Vac/boost gauges.140 mph Motorsports Speedo New engine: Total Seal rings and TRW pistons, ported and polished head w/ cc'd chambers,1.59"exhausts, SS valves, gutted upper, knife edged lower, A-230 cam, Race Engineering Adj Cam Sprocket, Crowlers, ARP head studs, and rod bolts. Walbro 255 HP pump and Kirban adj FPR, T-3. Centerforce II, KB subs and jack rails.
Pete Dunham


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DennySweet Offline
Member
#6
Guys when you click on the buy option a drop window with special instructions appear. Then specify the over size wanted. Yes they are Forged and they only have .020's left. Got my confirmation today 117.61 shipped to my door. Also won an auction on E-Bay for a set of powerforged TRW's 137.50 these are .030's in case I blow a bore size. Also Wes 1mm is .03974 .5mm is .020 OK. Not being a smart ass (I convert metrics to dec. everyday) It's boring too.Pete they had 20 sets at SP warehouse, only .020 overs left and 3 pistons .040 over. (I need 4)
88TC,87TC,,86S-10,82Toyota 4WD,3-88S-10Blazers.
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