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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*H25\s+engine\s*$/: 18 ]

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1. H25 engine (score: 1): Author: Adam Bradley <ambradley@attbi.com>; Date: Thu, 08 Aug 2002 15:00:41 -0700; I know the subject was raised once before, but I thought I'd bring it up for anyone considering this engine. Supposedly it's the same form factor as the R16/H20 although with a few differences (water; /html/datsun-roadsters/2002-08/msg00466.html (7,941 bytes)
2. Re: H25 engine (score: 1): Author: "datsunmike" <datsunmike@nyc.rr.com>; Date: Thu, 8 Aug 2002 21:40:51 -0400; Sounds like a good truck motor. A little too much stroke I would imagine. Mike a /// datsun-roadsters@autox.team.net mailing list; /html/datsun-roadsters/2002-08/msg00482.html (8,900 bytes)
3. Re: H25 engine (score: 1): Author: Adam Bradley <ambradley@attbi.com>; Date: Thu, 08 Aug 2002 18:57:41 -0700; BxS 3.6220x3.661 I don't know much about engine dynamics to know if that'd be streetable or not. Maybe with a higher rear end ratio, to keep the revs down? Adam Bradley '70 Datsun 1600 Roadster SPL31; /html/datsun-roadsters/2002-08/msg00486.html (9,906 bytes)
4. Re: H25 engine (score: 1): Author: SLBESQ@aol.com; Date: Fri, 9 Aug 2002 11:47:15 EDT; hi everyone i'm intrigued by the thought of 25% more displacement, there being "no replacement for displacement." is it (the H25) truly a bolt in? is it outwardly the same as the H20? and therefore b; /html/datsun-roadsters/2002-08/msg00515.html (7,951 bytes)
5. Re: H25 engine (score: 1): Author: Adam Bradley <ambradley@attbi.com>; Date: Fri, 09 Aug 2002 09:10:28 -0700; Here's a picture of the engine: http://www.wiproducts.com/images/H-series.jpeg The engine is only rated at 62hp, but then again the H20 is rated at 54hp, so I assume it's more due to restrictive thin; /html/datsun-roadsters/2002-08/msg00517.html (9,433 bytes)
6. Re: H25 engine (score: 1): Author: Thomas - Sweden <csp311@telia.com>; Date: Fri, 09 Aug 2002 19:31:13 +0200; Hmm, I wonder about bore & stroke. If stroke is over 90 mm I dont want to be too close if it reach 6000 rpm. Thomas /// datsun-roadsters@autox.team.net mailing list; /html/datsun-roadsters/2002-08/msg00521.html (10,176 bytes)
7. Re: H25 engine (score: 1): Author: Adam Bradley <ambradley@attbi.com>; Date: Fri, 09 Aug 2002 11:14:04 -0700; Stroke is 93mm. Maybe you can use an H20 crank in an H25 block and get like 2300cc? /// datsun-roadsters@autox.team.net mailing list; /html/datsun-roadsters/2002-08/msg00523.html (9,809 bytes)
8. Re: H25 engine (score: 1): Author: Marc Sayer <marc@gracieland.org>; Date: Fri, 09 Aug 2002 12:01:10 -0700; A 3.66" stroke isn't all that bad. Here is a Chevy V8 B&S chart with the engines in that stroke range and longer. Some of these can be made into pretty high revving motors, 6000 rpm for sure. :-) 325; /html/datsun-roadsters/2002-08/msg00525.html (9,926 bytes)
9. Re: H25 engine (score: 1): Author: Thomas - Sweden <csp311@telia.com>; Date: Fri, 09 Aug 2002 21:09:55 +0200; If the bore is 92 mm you can get 2180cc with the H20 crank (if it's 82 mm stroke). My Volvo 142 B20 engine was 92.5 x 86 mm (stock 88.9 x 80 mm) and it would pull all the way to 8000 rpm. The H20 is; /html/datsun-roadsters/2002-08/msg00526.html (10,724 bytes)
10. Re: H25 engine (score: 1): Author: Thomas - Sweden <csp311@telia.com>; Date: Fri, 09 Aug 2002 21:38:02 +0200; A long list but no 4-cylinder. Thomas /// datsun-roadsters@autox.team.net mailing list; /html/datsun-roadsters/2002-08/msg00527.html (10,803 bytes)
11. Re: H25 engine (score: 1): Author: Thomas - Sweden <csp311@telia.com>; Date: Fri, 09 Aug 2002 21:57:54 +0200; Long stroke 4-cylinders are Volvo S40 & V40 with 1948 cc (90 mm) no balance shafts. Saab 2300 cc (90 mm) 2 balance shafts. There was a rare FJ24 engine but it had less than 90 mm. I think Honda makes; /html/datsun-roadsters/2002-08/msg00528.html (11,457 bytes)
12. RE: H25 engine (score: 1): Author: "Peter Long" <Peter.Long@ecologic.ca>; Date: Fri, 9 Aug 2002 16:06:31 -0400; sounds like a lot of trouble, considering the known qualities of the SR and KA swaps.... /// datsun-roadsters@autox.team.net mailing list; /html/datsun-roadsters/2002-08/msg00531.html (12,888 bytes)
13. RE: H25 engine (score: 1): Author: Adam Bradley <ambradley@attbi.com>; Date: Fri, 09 Aug 2002 13:55:28 -0700; Agreed. But would be different... Adam Bradley '70 Datsun 1600 Roadster SPL311-28181 '67 Datsun RL411 SSS sedan RL411-11321 '66 Datsun PL411 sedan PL411-022447 http://www.picturetrail.com/abend /// d; /html/datsun-roadsters/2002-08/msg00535.html (13,904 bytes)
14. Re: H25 engine (score: 1): Author: Marc Sayer <marc@gracieland.org>; Date: Fri, 09 Aug 2002 14:06:51 -0700; No, but we weren't talking vibrations issues. The issue was rev limits. And a straight 4 is often better off in that respect because of internal component weights, and crank strength. The Nissan L6s; /html/datsun-roadsters/2002-08/msg00537.html (10,506 bytes)
15. Re: H25 engine (score: 1): Author: Thomas - Sweden <csp311@telia.com>; Date: Fri, 09 Aug 2002 23:21:48 +0200; A H20 crank and the H25 block might not be a bad idea. It will look original but with 2180 cc (???) if you can find any pistons. Thomas /// datsun-roadsters@autox.team.net mailing list; /html/datsun-roadsters/2002-08/msg00539.html (14,860 bytes)
16. Re: H25 engine (score: 1): Author: Thomas - Sweden <csp311@telia.com>; Date: Fri, 09 Aug 2002 23:40:29 +0200; Why do I bother? I should know better by now. /// datsun-roadsters@autox.team.net mailing list; /html/datsun-roadsters/2002-08/msg00540.html (11,324 bytes)
17. Re: H25 engine (score: 1): Author: SLBESQ@aol.com; Date: Sat, 10 Aug 2002 18:39:58 EDT; unless, and this is a big unless, the R16 head will bolt to the H25. then there is no problem with manifolds for dual two throat carbs, headers, etc. if the head on the H25 is different, then there m; /html/datsun-roadsters/2002-08/msg00572.html (7,945 bytes)
18. Re: H25 engine (score: 1): Author: "datsunmike" <datsunmike@nyc.rr.com>; Date: Sun, 11 Aug 2002 06:45:41 -0400; My 1600 head bolted to the H20 and I doubt they have different cooling passages and other critical passages that would be different. Mike etc. things the 1600....hehehe /// datsun-roadsters@autox.tea; /html/datsun-roadsters/2002-08/msg00589.html (8,755 bytes)

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