Jump to content
SAU Community

Recommended Posts

  • Replies 62.7k
  • Created
  • Last Reply

Top Posters In This Topic

  • chaos

    7164

  • Ska

    5791

  • BelGarion

    3645

  • Nexus9

    3590

Top Posters In This Topic

http://www.mrcontrols.com/images/badblock1.jpg

http://www.mrcontrols.com/images/badblock2.jpg

http://www.mrcontrols.com/images/badblock3.jpg

A while back we saw a block failure at the ~700rwhp level on Chemvolt's engine. Here is another failure from toymanf's engine. This engine was doing it's first competitive 1/4 mile run.

Toymanf is not sure how much power he was making on the run, but the dyno he was on while getting the engine set up gave 540rwhp on turbo only (all subsequent runs were done with the tires spinning on the dyno) and the 1/4 mile run on which the engine failed was running that plus a 200 shot of nitrous.

The tune was conservative and you can see that there are no signs of detonation on the piston or cylinder walls. EGT temps were fine. AFRs were in the 11s. Fuel was C16.

The block was a seasoned stock block, bored 40 over. A 1.6mm HKS headgasket held down with ARP studs torqued to 65ft/lbs. It appears that the corner of the block around the #1 cylinder was unable to hold the lifting force that the head was putting on it.

There was at least another 100rwhp left untapped in this engine, but it is unclear at this point if the 3s block is capable of holding that much power over the 1/4 mile.

Any thoughts on how to contain +700rwhp power levels and keep the block intact? Sleeves would not have helped here. I've heard of using 1/2" studs but that is going to require a lot of work and I'm not sure if there is enough material in the block to make that work. Would the 5s block more reliably accept this much power and more?

Guest
This topic is now closed to further replies.



  • Similar Content

  • Latest Posts

    • This looks great! Awesome to have the 5 speed with an LSD in this. The Recaro's look like SR2's or SR3's. It's a shame they've been retrimmed as they would have looked sweet in their original colours. I think I'd want my agent to be a little more up front and informative too. I've never imported but I reckon it would make me a little nervous, so the more info the better.
    • Thanks for doing that Duncan! Makes you a good person in my books. We don't get kangaroos or wombats here. But we have bats and it's similar. AFAIK it's often the mums with a baby attached that get hit because they drop lower when starting from a tree. If you hit an animal, check on it. https://www.ifaw.org/au/resources/wildlife-rescue-app An app to get the closest wildlife rescue contact.
    • My dream is also to have a proper hoist, but I don't think it will ever happen. My quickjack is probably as close as I'll ever get, it really is very good though. 
    • Yeah we keep on in the dailies, it is pretty poor how many animals get hit and the driver leaves without checking....have saved a couple of little ones over the years. Bit of a gruesome job though, pouches generally need to be cut open because they are so tight and often the joey doesn't realise mum is gone so they are still locked onto the teat. I checked the modules in front of the DS wheel where an oil cooler should go.... There is the radar unit - that can go for race use) One of the 2 HX water pumps, the silver cylinder. That needs to be kept but might be able to be relocated But the bad news, the big computer mounted vertically in front of the wheel (blocking any potential air exit) is the electric steering computer. That is required until/unless i do a hydraulic steering conversion, and in CAD based modern car design it is not like I can just pop a big unit like that somewhere else (plus the loom would be too short anywhere else too). So, the passenger side is OK to clear out (just use a smaller washer reservoir, potentially elsewhere), but the DS no beuno
    • Well, all the best with the new camry It was interesting to hear about the UK process, it is generally a lot more streamlined here with a shipping agent looking after all the import side (noting the exact final price can still be a surprise.....) and I've used a few different brokers on the japan (or US) side, and never had any trouble with any of them....luck of the draw I guess. You mentioned you didn't get the auction sheet (understandable since you bought it from a dealer, not auction), but I always try and get hold of that because they are pretty thorough. I've imported 2x R grade vehicles over the years and both were fine, repairs in Japan are pretty thorough compared to here in Oz.
×
×
  • Create New...