L92 Pistons?
05-25-2008, 12:38 AM
#1
L92 Pistons? Okay, okay...
What are the current choices for L92 pistons?
I am building two L92 engines...one N/A and another F/I.
I need two sets of pistons, 4.030", w/4.0" stroke crank, approx. 11:1 comp. ratio and 4.030, 4.0" w/8.5 or 9:1 comp. ratio. Does ANY piston manufacturer sell/stock SHELF pistons with the above size and comp. ratio mentioned above? Thanks in advance for your help.
What are the current choices for L92 pistons?
I am building two L92 engines...one N/A and another F/I.
I need two sets of pistons, 4.030", w/4.0" stroke crank, approx. 11:1 comp. ratio and 4.030, 4.0" w/8.5 or 9:1 comp. ratio. Does ANY piston manufacturer sell/stock SHELF pistons with the above size and comp. ratio mentioned above? Thanks in advance for your help.
05-25-2008, 01:29 AM
#4
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Are you talking about the an L92 block? Or for L92 heads? I'm thinking diamond makes pistons relieved for L92 heads, but as far as in the 4.065 bore range I'm not sure... I think they sell them in a 4.070 bore, at least I think that is what was listed in their catalog the last time I checked...
05-25-2008, 09:15 AM
#5
We're doing a 408 for a customer right now. He is using L92 heads and wanted to spray a 300 shot so we had to order a custom set from Wiseco. I believe Diamond makes a flat top for the L92 head as well, but we're spraying a 300 shot so we opted for the Wiseco. 4.030 bore with L92 reliefs in a flat top.. had to have it made by Wiseco for our application.
05-25-2008, 10:45 AM
#6
We're doing a 408 for a customer right now. He is using L92 heads and wanted to spray a 300 shot so we had to order a custom set from Wiseco. I believe Diamond makes a flat top for the L92 head as well, but we're spraying a 300 shot so we opted for the Wiseco. 4.030 bore with L92 reliefs in a flat top.. had to have it made by Wiseco for our application.
Thanks, guys!
05-25-2008, 10:53 AM
#7
Are you talking about the an L92 block? Or for L92 heads? I'm thinking diamond makes pistons relieved for L92 heads, but as far as in the 4.065 bore range I'm not sure... I think they sell them in a 4.070 bore, at least I think that is what was listed in their catalog the last time I checked...
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05-25-2008, 12:06 PM
#9
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Mahle has them on the shelf. I paid $540! With rings and pins and locks. They have them in a couple of different setups. Mine were 4.030" bore, 3.622 stroke ( they have them in 4" stroke), -4cc L92 valve relief flat tops, 6.125" rod, they make them in a dish for F.I. but since my heads have 75 cc chambers, I went with the flat tops with my turbo engine. Real nice pistons, fully coated with file fit rings. Diamond stocks them in the L92 bore, but they were custom for the 4.030 bore. $862!
05-25-2008, 12:14 PM
#10
Mahle has them on the shelf. I paid $540! With rings and pins and locks. They have them in a couple of different setups. Mine were 4.030" bore, 3.622 stroke ( they have them in 4" stroke), -4cc L92 valve relief flat tops, 6.125" rod, they make them in a dish for F.I. but since my heads have 75 cc chambers, I went with the flat tops with my turbo engine. Real nice pistons, fully coated with file fit rings. Diamond stocks them in the L92 bore, but they were custom for the 4.030 bore. $862!
Let me ask you one thing... What do you think the difference is between a $540 piston and a $850 piston? You get what you pay for in this business.
We dont use the cheapest piston we can find in our builds. We use Wiseco over Diamond as its a little better for heavy n2o and boost.
05-25-2008, 12:29 PM
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Let me ask you one thing... What do you think the difference is between a $540 piston and a $850 piston? You get what you pay for in this business.
We dont use the cheapest piston we can find in our builds. We use Wiseco over Diamond as its a little better for heavy n2o and boost.
We dont use the cheapest piston we can find in our builds. We use Wiseco over Diamond as its a little better for heavy n2o and boost.
Manley also makes an L92 piston and it has the coated skirt like the Wiseco.
JE makes some L92 pistons also.
I don't know if Arias or Ross offers anything for the L92's.
05-25-2008, 12:38 PM
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Go ahead and try to justify using those wiseco pistons. I have personally seen more ruined engines running Wiseco's than I have stock pistons. You have to run a ton of skirt clearence on those things. So the OP was looking for a set of L92 shelf stock pistons for less than $600. Not $850 custom pistons!
05-25-2008, 01:00 PM
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Go ahead and try to justify using those wiseco pistons. I have personally seen more ruined engines running Wiseco's than I have stock pistons. You have to run a ton of skirt clearence on those things. So the OP was looking for a set of L92 shelf stock pistons for less than $600. Not $850 custom pistons!
Here's a link to the Wiseco stuff...go to page 15:
http://www.wiseco.com/Catalogs/Automotive/Chevrolet.pdf
05-25-2008, 01:13 PM
#16
Go ahead and try to justify using those wiseco pistons. I have personally seen more ruined engines running Wiseco's than I have stock pistons. You have to run a ton of skirt clearence on those things. So the OP was looking for a set of L92 shelf stock pistons for less than $600. Not $850 custom pistons!
The OP did not state a budget, he asked for an N/A and a boost. I gave him the options I use. The piston does not ruin the engine. The inexperienced builder might or the tune being bad and running 13:1 compression and detonating might ruin. But a properly assembled engine is not ruined by a correctly selected piston. Most of my builds are nitrous or boost related but when you find a great product you tend to stick with it. We use Wiseco so that's why I recommend them. We go with quality at a price that makes sense.
If your going to be hitting this thing with n2o or boost you want a good piston with good ringlands right?
I dont sell pistons I could honestly care less where he spend his money. He posted a question so I gave him the options I would go with. I never said it was the only option out there, sorry for the confusion.
Last edited by 99blancoSS; 05-26-2008 at 06:07 PM.
05-25-2008, 04:05 PM
#17
Go ahead and try to justify using those wiseco pistons. I have personally seen more ruined engines running Wiseco's than I have stock pistons. You have to run a ton of skirt clearence on those things. So the OP was looking for a set of L92 shelf stock pistons for less than $600. Not $850 custom pistons!
05-25-2008, 04:23 PM
#20
Let me ask you one thing... What do you think the difference is between a $540 piston and a $850 piston? You get what you pay for in this business.
We dont use the cheapest piston we can find in our builds. We use Wiseco over Diamond as its a little better for heavy n2o and boost.
We dont use the cheapest piston we can find in our builds. We use Wiseco over Diamond as its a little better for heavy n2o and boost.
Thanks for your input...it has been very helpful!
You guys rock.