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Hey man I couldn't get tomei throttle coat from anywhere ....apparently tomei don't supply an MSDS (Meterial Safety Data Sheet) when they ship the product outside of japan so a lot of countries won't let it through customs. There are some substitutes available tho.... I used Loctite Moly Dry Film in an aerosole can, sprayed into the lid to make a small puddle and used a 50c paint brush to coat the butterfly's while closed. On tomei's website it said to only coat the butterfly's and around the shafts/bores where they go through the housings but because the Loctite stuff is aerosole its super thin compared to the tomei paste so like I said, I painted mine while shut to get a good layer on the butterfly and bore so it's got a definite seal when closed. I fully cleaned the throttles with a rag and some carby cleaner befor the coating of course and shone a torch up the plenum and could see light around each throttle. Now coated, you can't see any light from anywhere inside the throttles.

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I have seen plenty of side feed Skyline injectors lately showing signs of fine rust blockages in the filters, and only some of the injectors were blocked, some were clean. It could be worth dropping a few out to check...

I can only think of one other reason, head gasket...

  • 2 weeks later...

hmmmm well it wouldn't surprise me if the head/block wasn't prepared properly prior to re assembly..........after asking around, i'm not the first person to have had big dramas with nizzpro's services..........

I always use Hylomar spray on my MLS gaskets. It fills up any imperfections and scratches.

At least you can do the head in the car, mine is an engine out job, and two head gaskets. :/

  • 2 weeks later...

Not only did the head crack, but i have had a super bad sounding noise in the clutch/gearbox area recently.......apparently ARP flywheel bolts are actually too long for RB motors .........

the clutch and flywheel where loose on the back of the motor....... the threads in the back of the crank are completely fingered and the center guide is slightly mushroomed.... the flywheel had to be reemed off with two pinch bars therefor a complete rebuild is being undertaken............

Gutted man..........

I used ARP flywheel bolts on my RB25 and they were fine. The packet they came in said they were for a 3S-GTE (toyota 4 cylinder) but they worked perfectly for me. Exactly what bolts were you using? A rebuild is better than losing your feet.

i used - ARP Flywheel Bolt Set (102-2801)

we measured and checked the bolts against the arp website specs and they are exactly what the website said they should be...... which is 3mm too long in my crank.

very strange..........

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