MCNLT New Member 6 Member For: 5y 11m 27d Gender: Male Posted 21/04/19 03:16 PM Share Posted 21/04/19 03:16 PM Hey guys First time posting, was just wondering. Internals of the motor aside. Is there any difference between a block from a BA to a FG like strength or build wise? Cant seem to find anything besides internals are different Link to comment https://www.fordxr6turbo.com/forum/topic/94760-block-difference-not-internals/ Share on other sites More sharing options...
tazzanz Donating Members 573 Member For: 9y 8m 17d Gender: Male Location: NZ Posted 21/04/19 04:23 PM Share Posted 21/04/19 04:23 PM I looked into this last year, From my research BA BF Block possibly stronger with higher nickel content (Unconfirmed) But people are making 1000hp left right & center on BA BF FG blocks so its not really an issue. I'm going to have my block sonic tested before my build to check bore thickness and that is all that counts really. Link to comment https://www.fordxr6turbo.com/forum/topic/94760-block-difference-not-internals/#findComment-1682325 Share on other sites More sharing options...
HI PSI Member 1,586 Member For: 18y 10m 23d Gender: Male Location: Central Queensland Posted 22/04/19 08:52 AM Share Posted 22/04/19 08:52 AM (edited) Primarily, there is no differences between the blocks. However, be sure to sonic test any block that you intend for a turbo. As early casting seem to be more prone to core shift. I'm currently building a spare engine an went through 3 blocks (BA, BF and early FG) , to find one good one. After boring and honing the FG block 0.020", my minimum cylinder thickness is 0.115". The worst that I encountered was 0.060" in one area of No.1 cylinder, on the BA block. kkep in mind that that figure was from a standard block, with no additional machining which is required for the new slugs. Taking another 0.010 off that wall, would likely result in failure.... Edited 22/04/19 08:54 AM by HI PSI Link to comment https://www.fordxr6turbo.com/forum/topic/94760-block-difference-not-internals/#findComment-1682350 Share on other sites More sharing options...
tazzanz Donating Members 573 Member For: 9y 8m 17d Gender: Male Location: NZ Posted 22/04/19 02:03 PM Share Posted 22/04/19 02:03 PM (edited) What size were your pistons brad? OS 0.5mm? Edited 22/04/19 02:05 PM by tazzanz Link to comment https://www.fordxr6turbo.com/forum/topic/94760-block-difference-not-internals/#findComment-1682354 Share on other sites More sharing options...
HI PSI Member 1,586 Member For: 18y 10m 23d Gender: Male Location: Central Queensland Posted 22/04/19 07:38 PM Share Posted 22/04/19 07:38 PM (edited) Yes, they are 0.020" oversize. I can't remember how thick the ceramic coating was though. We had to allow for that also. 😄 Edited 22/04/19 07:39 PM by HI PSI 1 Link to comment https://www.fordxr6turbo.com/forum/topic/94760-block-difference-not-internals/#findComment-1682358 Share on other sites More sharing options...
tazzanz Donating Members 573 Member For: 9y 8m 17d Gender: Male Location: NZ Posted 23/04/19 12:53 AM Share Posted 23/04/19 12:53 AM Nice did you grout fill at all? Something I need to make a decision about very soon. Link to comment https://www.fordxr6turbo.com/forum/topic/94760-block-difference-not-internals/#findComment-1682364 Share on other sites More sharing options...
HI PSI Member 1,586 Member For: 18y 10m 23d Gender: Male Location: Central Queensland Posted 23/04/19 12:05 PM Share Posted 23/04/19 12:05 PM No, no need for my power requirements (1,000 rwhp) and given the wall thickness. Link to comment https://www.fordxr6turbo.com/forum/topic/94760-block-difference-not-internals/#findComment-1682380 Share on other sites More sharing options...
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