building a high hp 7m, just curious about crank scrapers. Do they make a difference? worth the money? does it matter if you're using a 6m or 7m crank?
crank scraper?
- Thread starter forcefedsupra
- Start date
Yes they can make a small difference, just need to be careful which rods you use as some aftermarket rods don't have the spray holes in the beam so it will wear the thrust surface on the piston skirt when you minimise the splash lubrication from the crank.
You have to order the correct scraper to suit whichever crank you have, I worked with Ishihara-Johnson to develop the 7M Teflon scrapers, they're very effective but a bit noisy if you have a quiet car (think going blubbbb blubbb on your lip with a finger)
You have to order the correct scraper to suit whichever crank you have, I worked with Ishihara-Johnson to develop the 7M Teflon scrapers, they're very effective but a bit noisy if you have a quiet car (think going blubbbb blubbb on your lip with a finger)
IJ.;1658570 said:Yes they can make a small difference, just need to be careful which rods you use as some aftermarket rods don't have the spray holes in the beam so it will wear the thrust surface on the piston skirt when you minimise the splash lubrication from the crank.
You have to order the correct scraper to suit whichever crank you have, I worked with Ishihara-Johnson to develop the 7M Teflon scrapers, they're very effective but a bit noisy if you have a quiet car (think going blubbbb blubbb on your lip with a finger)
Just a quick question on this Ian. Are the teflon scrapers that I have installed still good with the Pauter rods?
Hello Turd Furguson,forcefedsupra;1658502 said:
My 7MGTE is fitted with an Ishihara Johnson crank scraper for the 6M crank. It was a little tricky to get it fitted well, the crank is modified, but nothing a file and an hours work didn't solve. I haven't noticed any problems after 3K miles. There is a very small weeping going on near the front of the scraper, where it butts up against the front custom spacer, I fab'd up. Nothing I can't live with. Otherwise, the 7M seems to like it and so do I!
Van
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I used some washers same thickness as the scraper front and rear of the pan so I could pull it down evenly, that and 1207b 3Bond RTV= 0 leaks.
mecevans;1658688 said:
A proper windage tray can be very effective but I haven't seen one for a 7M, Normal steel scraper will leave a film on the crank due to the clearence required the Teflon scraper is actually trimmed to contact the crank so acts as a wiper.
IJ.;1659050 said:
New if I waited I could post this question. Will a teflon scraper be alright to use with a custom 8 qt. oil pan with baffles and a windage tray? Or is it overkill?
I've been talking to James @ JE about using my oil pan as a footprint for a new al. custom oil pan. He works with SIKKY a lot on developing new products, he already has custom pans for Nissans and the Corvette and is considering making them for the 7M .
Did th group A's use scapers? Im wondering if I should stay away from scrapper sbecause I don't have oil squirters.IJ.;1659182 said:I used mine with the Group A Magnesium pan with baffles and tray
IJ.;1659251 said:
Yes. There stock rods so there spraying on the thrust side. Most of the Toyotas I have worked on have a windage tray type design. I don't see why Toyota didn't do somthing similar on 7M's.
5M pan
http://i9.photobucket.com/albums/a64/Droperer/OilPan.jpg