That's a first for me. Never seen one break apart within 20 years of dealing with these cars. Check the lower gear to make sure none of those pieces got between it and the chain.
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92' SER -Pulsar/VVL combo on E85, 11.31 ET @134mph, Full weight, street car, A/C and sunroof, PTE 6262 at 19 psi (low boost) Now running Nismotronic SA
73' Datsun 510 with SR20DET (project)
73' Datsun Drag Car in the works
I have seen one crack at the same spot yours did (right below the arm latch) but the damage was not that extensive to the outside of the tensioner. Came out of a stock VE. Serious carnage there, why not get the upgraded tensioner at this point?
Ouch, never seen an sr tensioner do that. Crazy stuff.
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1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
JMS Racing tuned to 716whp, 423wtq at 29psi
10.5 @ 149.2mph to date I believe the fastest trap speed SE-R, Much more to come with some changes!
Funny enough, just last weekend at ATCO, I saw a RWD SR20 Mazworx engine in their trailer (1,400 horsepower, 11k rpm), with a modified tensioner. Not sure on the details, but they essentially replace the innards with a big-ass cap screw (maybe 10mm), and set the tension manually.
The one on the engine was modded from stock and he told me they were working on a from-scratch replacement which they'll be selling.
C
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cogito ergozoom................ 1994 SE-R / [S]DE+GT2560R / S4 / Nismo LSD / Calum Realtime/ 15x7 RPF1[/S] / Hyperco - AGX. Just about stock. 1995 [S]Turbo[/S] Miata R Package / [S]GT2560R[/S] NA is best, Bro / VVT engine /Megasquirt / Flyin Miata suspension / 15x8 949 6UL
Originally Posted by Chriscar Funny enough, just last weekend at ATCO, I saw a RWD SR20 Mazworx engine in their trailer (1,400 horsepower, 11k rpm), with a modified tensioner. Not sure on the details, but they essentially replace the innards with a big-ass cap screw (maybe 10mm), and set the tension manually.
The one on the engine was modded from stock and he told me they were working on a from-scratch replacement which they'll be selling.
C
I saw that too, i'm not sure if that would prevent the cracking but it would prevent the chain from slipping.
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92' SER -Pulsar/VVL combo on E85, 11.31 ET @134mph, Full weight, street car, A/C and sunroof, PTE 6262 at 19 psi (low boost) Now running Nismotronic SA
73' Datsun 510 with SR20DET (project)
73' Datsun Drag Car in the works