Post by dando127 on Nov 11, 2021 6:21:56 GMT
400 bliz
Looking for info on a 71 400 blizzard motor it has the initials bs hand stamped on fin over exhaust yellow paint was sprayed on head bolts with head on leaving overspray around head stud area. All carb and ignition nuts/ studs are hand drilled for wire lock what races were 400 blizzards used in besides Winnipeg to St. Paul and what's the best tunnel to use for a clone any info is appreciated
Admin
400 bliz, welcome to the board. Lot of folks are out-of-pocket this weekend (Easter). You should get some answers in a day or two.
Back in the early days when the USSA was trying to figure out what was supposed to be in the Stock Classes vs. Modified Classes the 400cc engines were running against the 440s in MOD III (341-440cc). However in the Stock Class D (346-400cc) that motor, depending on who at the track was in charge of putting what where was a force.
The MISA (Michigan International Snowmobile Association) really had a handle on this and before the 1971 winter race season they started naming the sleds by make in model what went where (Stock vs Mod).
Can you post pictures of this motor? Engine tag also? See this thread for how to post picture:
400 bliz
Thank you for the info . Well I spent an hour trying to get photos set up to post here no go I'm done so sorry no I cannot post pict here would like to. This engine has no tag not sure it ever had one has pins to hold tag but no evidence of tag ever being there I had to mic the bore and stroke![]()
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Admin
E-Mail me the photos, I'll post them for you.
Monty
400 bliz
Picts sent
Admin
Pictures posted below.
Engine has HD72A Carbs
While I'm not an expert on blizzard races sleds, I'll give my thoughts.
(1) Either this motor never had a tag and was pulled to work over by the factory race team or other engine builders or (2) the original motor grenaded and the folks who swapped out the bottom end with an OEM replacement didn't switch the tag over or (3) It's a 1972 consumer 400 modified for racing.
Note: Correct me if I am wrong, the '72 blizzard 400 and 440 motors had rotary valve intake.
It's nice to have a tag as a quick look by the race day inspectors, but for major races they pulled the head(s) and mic'd the bore and stroke anyway.
Again, I'm not an expert. Be interesting to see what others who know a whole lot more than me think.
Monty
400 bliz
Any info on bertil siklund
oldcanary
That is a 1971 Blizzard motor, looks just like my 440 with the "trenched" heads. Bertil Siklund was a factory Ski Doo racer from Umea Sweden according to an ad in the 1971 Eagle River program. He was listed as number 2504 and entered in Mod 2, Mod 4, Non-Production and World Championship. Do not know how he finished. My 1970 440 had "Gilles" engraved on the cylinders, still do not know who that is. Maybe a driver or mechanic? Cool find! I'll let you know if I find any pics of 2504.
400 bliz
Thank you for your info I love the history behind these any tidbit is relished
400 bliz
Bertil is registered as #224 in Winnipeg to St. Paul in 71 on skidoo but no times posted did he wreck before grand forks ? Not sure this was his engine but maybe? It has been modified at some point but close to timing hole above the bs initial is an M
Looking for info on a 71 400 blizzard motor it has the initials bs hand stamped on fin over exhaust yellow paint was sprayed on head bolts with head on leaving overspray around head stud area. All carb and ignition nuts/ studs are hand drilled for wire lock what races were 400 blizzards used in besides Winnipeg to St. Paul and what's the best tunnel to use for a clone any info is appreciated
Admin
400 bliz, welcome to the board. Lot of folks are out-of-pocket this weekend (Easter). You should get some answers in a day or two.
Back in the early days when the USSA was trying to figure out what was supposed to be in the Stock Classes vs. Modified Classes the 400cc engines were running against the 440s in MOD III (341-440cc). However in the Stock Class D (346-400cc) that motor, depending on who at the track was in charge of putting what where was a force.
The MISA (Michigan International Snowmobile Association) really had a handle on this and before the 1971 winter race season they started naming the sleds by make in model what went where (Stock vs Mod).
Can you post pictures of this motor? Engine tag also? See this thread for how to post picture:
400 bliz
Thank you for the info . Well I spent an hour trying to get photos set up to post here no go I'm done so sorry no I cannot post pict here would like to. This engine has no tag not sure it ever had one has pins to hold tag but no evidence of tag ever being there I had to mic the bore and stroke
Admin
E-Mail me the photos, I'll post them for you.
Monty
400 bliz
Picts sent
Admin
Pictures posted below.
Engine has HD72A Carbs
While I'm not an expert on blizzard races sleds, I'll give my thoughts.
(1) Either this motor never had a tag and was pulled to work over by the factory race team or other engine builders or (2) the original motor grenaded and the folks who swapped out the bottom end with an OEM replacement didn't switch the tag over or (3) It's a 1972 consumer 400 modified for racing.
Note: Correct me if I am wrong, the '72 blizzard 400 and 440 motors had rotary valve intake.
It's nice to have a tag as a quick look by the race day inspectors, but for major races they pulled the head(s) and mic'd the bore and stroke anyway.
Again, I'm not an expert. Be interesting to see what others who know a whole lot more than me think.
Monty
400 bliz
Any info on bertil siklund
oldcanary
That is a 1971 Blizzard motor, looks just like my 440 with the "trenched" heads. Bertil Siklund was a factory Ski Doo racer from Umea Sweden according to an ad in the 1971 Eagle River program. He was listed as number 2504 and entered in Mod 2, Mod 4, Non-Production and World Championship. Do not know how he finished. My 1970 440 had "Gilles" engraved on the cylinders, still do not know who that is. Maybe a driver or mechanic? Cool find! I'll let you know if I find any pics of 2504.
400 bliz
Thank you for your info I love the history behind these any tidbit is relished
400 bliz
Bertil is registered as #224 in Winnipeg to St. Paul in 71 on skidoo but no times posted did he wreck before grand forks ? Not sure this was his engine but maybe? It has been modified at some point but close to timing hole above the bs initial is an M
